Value of a '72 3/4 ton rolling frame?

[lukecp]

I found a parts truck for sale today....with a very rust free (for this area anyway) cab on it, even in the same color as my truck....for the right price too .

Anyway, it is a '72 Chevy 3/4 ton pickup...with 8 lug wheels, front disc brakes, and i would imagine a Dana 60 or HO72 rear axle with 3.54 gears (truck originally had a 402 big block). How much would the rolling frame be worth, minus engine and transmission? Aren't 3/4 ton front disc trucks kinda hard to find?

Also, the truck had air conditioning, but the heater box, brakets, and compresser under the hood are all missing. Could i put my non-AC heater core and box on the firewall, and run that until i can piece togheter a factory-like AC system in the future? Thanks for any help