I recommend either Vintage Air or Hot Rod Air. And for the 36 you got, you will need their largest unit. Mine has Airtique but they are out of business, so when I replace I will go to one of the two mentioned and even though my 34 sedan is probably a little smaller than yours on the inside, I too will need one of the large units. You should have dealers for both local to you. If not, Vintage Specialties out of Gettysburg sells both.