I saw a couple sets of C4 Corvette suspension at the PIR swap meet just yesterday. There is an outfit that makes a kit to put that suspension on an AD truck, but I don't know about one for a TF.
At the rear I think you have some straight forward brackets to build. At the front the conversions I've seen were all based on custom made crossmembers.
I'd like to see pictures as you proceed. As a C4 owner I sometimes think about what driving my '55 1st Suburban would be like if it cornered like my 'vette.
cool, I am also a C4 owner and a C3 also, old trucks and corvettes seem to go together well. I think a fully independent suspension would make the truck handle great.