What quench clearance are you going to have? .035 or .065?Youdo not need copper head gaskets - the Felpro will work or a better choice with dissimilar metals is the Cometics.
Why settle for a cam off the shelf - contact Racer Brown or Straightline performance. Bullet Cams have a lot more selection too.
Fro the price difference on a new build - go Diamond or Probe or any number of other forged pistons for the build.
For that light car up the TC to a 3-3200stall and a 650 mighty demon carb will make a very happy combo. 3.91sg w/7 1/2"B-B x 15" steelies and 255 x 60s will fit for the street.
Have fun :thumbup: