AD Heaters First , figure out which one you want (there's several) then go to The Stovebolt Page and look in the classifieds section and find " Mother Trucker " he'll have what you need affordably and your choice of 6 or 12 volt fan motor too .
Stovebolt is another forum site with extensive links to all things good. www.stovebolt.com BTW, welcome to the forum.
thanks for the info btw i live in placerville c.a. started this project 3yrs ago trying to keep as stock as possible geting hard being a split year