I use a direct vent wall furnace that I got for free from a guy that was remodeling his rec room. It mounts directly against the wall and the whole combustion chamber is vented to the outside.The whole unit is about 5 feet by 20 inches wide by 8 inches or so deep. Its 3500 btu's and heats my 22...
Phats, what I did on my 36 sedan was to use a section of roof from a 70's VW bus. I welded it to the inner part of the opening and then glued vinyl top foam to it and reinstalled ( glued)the top insert that I bought from LeBarron Bonney on top of the foam( I also used the stock rubber molding...