josh, all air conditioners do the same thing. you can uyse your stuff from the c20 with no problems, if you can find a place to mount the stuff. fab up some bracketts or what not, and mount the stuff up. check a local a/c supply for a condenser that will fit in your target location (usually in front of the radiator) then have custom hoses made to connect the components. after you have everything under the hood from a junk yard or ebay or whatever is cheap check out:

http://www.southernrods.com/brand_category.php?query=Southern+Air
or
http://www.oldairproducts.com/shop/index.php

from these guys you can buy the under dash or a hidden behind dash unit and switchs for $200 - $600 depending on what you want. dont pay $1000+ for a full aftermarket system, peice it together with whats cheap!

good luck.
btw this is the under dash i have in my 63 c10:
http://www.southernrods.com/categor...cooling-systems/products/product-19.html

it is kind of an eyesore but keeps me cool in Dallas traffic!