How much for 71 Thermoquad?

It's rare, but if it's missing parts....the 71 is an air metered carburetor. 72 and up were fuel metered. Chrysler replaced a crapton of those carburetors under service bulletins. That should tell you something. I wouldn't have one. Pain in the *** to tune....as if they're not already. But if you're a glutton for punishment, go for it.