? about that 3.65” crank

The CHEAPEST thing to do with it would be to use negative deck 360 pistons. The stroke increase is minimal (.070"ish), so many pistons with a .984" pin and compatible height exist. One that comes to mind with generous valve reliefs (4) is the H405CP, with a 1.637" height. I used these (with head milling and block decking) to make a 367" (.040" over) 360 with a stock crankshaft. Got 10.5:1 with J-heads and ran 96mph in the 1/8mi with a .508" cam and unported RPM intake. You'd have similar compression without expensive decking/milling, even more with smaller chamber heads. Of course all the forged TRWs would work, but no valve reliefs unless you ($$$) have them cut. You'd have to get the small end of the Chevy 6.125" rods honed (after removing the bushing) for a press-fit .984" pin. I have a set of those rods myself, no big deal. Speed-Pro Hypereutectic Pistons H405CP