The Chevy Impala is still one of the most sought after cars to lowride and recently it has been growing in popularity amongst the hot-rod community as well. This constant demand has sent car builders looking far and wide for these cars, and with this demand, the non-compliant builders have moved to building custom four-door and station wagon versions of our beloved Impala. From clean daily drivers to weekend family cruisers and all-out custom rides, theses wagons have graced the pages of LRM and cruised low on streets across the US.
Wagons are great for all of those builders who desire the best of an Impala and the functionality of a midsize SUV. To maximize the storage capacity and to use the extra passenger room available with the flip-up seat, the factory provided the perfect space for a modest sound system to live in the spare tire area. The beauty of the spare tire well is that it's out of the way and will provide your bass out of the rear side panel much like the newer GM SUVs.
In the past, we've shown you how to design and lay out different types of custom enclosures and usually it's for a hot look or to maximize space. In the case of our wagon, we need to maximize space, make the enclosure fully removable, and of course we want it to look good. The theme for this particular installation was stealth with custom flare. To achieve this, we opted to build the entire system into the side panel and contain it within the factory cover for the stealth effect and dress the installation properly so that when the cover is removed there will be something to write about.
There are always obstacles to contend with in a custom installation, and in our case the decision to mount everything in the side panels could cause heat issues with the amplifiers. To overcome this, we will be using the moving air from the subwoofer to keep things from getting stale. To do this, we need to make sure that there's a constant supply of fresh air for the subs to use and that the amplifiers have enough room around them to take advantage of this moving air.
Dressing the enclosure and its surrounding area is another key to this installation. In the area under the package tray, we have many luxuries that cannot be taken advantage of in this particular type of installation. First, we have the wide open space that allows us to build a standard box. Next, we have many squared-off areas that provide us plenty of edges to use for a clean-looking yet simple to build beauty panel.
The last thing that immediately comes to mind is the simplicity of the upholstering of this beauty panel. In our confined area, we have multiple angles to contend with, which makes it virtually impossible to create a simple enclosure that will both maximize space and still remain fully removable. As for the beauty panel, or panels in this case, we have compound angles that turn in, up, over and around, thus taking the simple out of our beauty panel. Follow along and watch our small enclosed area turn into an upholstered work of automotive art.
 For an installation of this...  For an installation of this type, only hardcore attitude will suffice. Orion's lineup of amplifiers and speakers will do the trick. |  The spare tire area shown...  The spare tire area shown here with the cover in place is where our system will be housed. Still in its rough state, we have a lot of work ahead of us. |  Many, many measurements are...  Many, many measurements are taken and the area is approximated to get an idea of what we can expect to find for usable space. |
 A cardboard template is cut...  A cardboard template is cut to use as a pattern. Cutting this out of wood directly would take more time than is necessary. Cutting a simple template is worth the $2 that we spent on the chip board used in this installation. |  After cutting out our basic...  After cutting out our basic shapes, we can confirm the amplifier locations. The panels were attached with loosely driven air nails for ease of removal. This is by no means the final configuration of the enclosure. |  We have precut the ring that...  We have precut the ring that we will use for our subwoofer, and use the sub and ring to test fit the desired area for clearance and overall fit. Just as expected, the sub will not clear the back panel. |
 After countless measuring...  After countless measuring and final trim cuts, our box and ring are permanently glued and nailed together. Notice the notches for the front and rear panels cut to allow a secure seating of the sub ring and the support board that will aid in supporting the weight of the 12-inch sub. |  While the fiberglass can be...  While the fiberglass can be made very solid, we opted to add in an additional panel to strengthen the area around the magnet and fill in the back wall. The cut-out allows the clearance the magnet requires. |  The odd shapes allow clearance...  The odd shapes allow clearance to the back wall and a uniform stretch of material for a clean, rounded look. |