I installed Vintage Air two years ago in my 1950 3100 with 350 sbc. It cools nicely in the warm weather and warms nicely in the cold weather. Installation isn't complicated. I found the kit makes it easy. You will lose your glovebox. (small price for the comfort.

http://i845.photobucket.com/albums/ab15/joetravjr/DSC01632.jpg

http://i845.photobucket.com/albums/ab15/joetravjr/DSC01622-1.jpg

Joe Trav