Agreed Mike.

In fact, I've been building my pickup for 5 years now and have kept to a resto-rod theme. The under-seat location keeps my dash front "clean" and original while behind the dash volume is left more open. As you know, these pckups have very little "extra" room.

The exit ducts and vents will be easy. 2 can exit the same sheet metal "skirt" already mentioned and 2 can exit above and behind the seat back at the door post/cab corner area. All can be hidden such that they will not be visible yet remain completely functional.

I also plan to mount my AM/FM radio under the seat and use a credit-card size remote to operate the system. This also allows the same benefits as the under seat heater/AC in that the pickup never had either of these items and I do not want them visible. Case in point, an inside rear-view mirror wasn't even standard.