360 piston id and compression test results

Good.. that is pretty much the standard size and the head gaskets sound like standard Felpro 8553PT's. Works out right at 8.0:1 SCR. Getting the cranking compression numbers you did would have taken a pretty small cam. (And who knows.... your gauge may be reading a bit high. )

Those heads would put you up in the low 9 SCR range as said with Mr Gasket 1121G head gaskets. IMHO, I'd be thinking about new pistons to get the SCR up a bit more for the low RPM torque in your planned use. (Plus just freshen things up so you can lean on the engine without the bottom end going away soon.) 1.6 rocker ratio is good; helps the lift to duration ratio which helps low end torque too.

If the budget allows, lighter SCAT rods and some hypereutectic pistons will lighten up the rotating assembly. Frees up some torque to go to the wheels and the shifts will be faster.

Is this a manual trans car?

No, 904 auto. Yeah ive been thinking some new pistons are probably in order based on what I'd like to do, been thinking some hypers. Going to balance the assembly for a neutral balancer with my b&m Flexplate and also for neutral converter unsure of stall speed yet waiting on that once my cam specs are chosen. Plan on 1.6 rockers as well, i think with a few new parts and the rest freshened up it will be a nice stout combo. Unsure of how much to build the heads up though, stick with 1.88 intake or go to 2.02?? Thinking of staying 1.88, bowl blend mild port work, beehive springs worth the jump??