360 Build ... another one
3.5's as in 3.55 gears?
On what size tire?
Is there a converter change in the future or possible?
Is this powr possible. (OMG! YES!!!!!!!!!!!!!! And why not?
IMO, and how I like to do things;
Zero deck piston height (KB 107's or Federal Mougal cp116's, deck height may need to be milled down to make it a zero deck height.)
A cam like or similar to a Comp Cam 280 (230 @ 050)
pocket ported heads
RPM intake
750 carb headers (Extractors)
2-1/2 inch exhaust pipe.
400+ no problem.