Did not want to spend 2 grand on the prefab solution, also, I intended to: leave as much headroom as possible by narrowing the console between the front seats fit a GPS antenna with a ground plane inside the console just behind the doors have the air for the overhead get into the console below the bulkhead not through it fit a bilge blower as a ground ops fan, no a/c needed on most days here, but getting some outside air in sure is nice learn a thing or two about fiberglass on a non-structural...