Thanks everyone im weighing my options here:)

TRW pistons could be done even thougth a lighter piston would be prefered,the remains of the present rotating assembly consists of a stock forged crank, Eagle H-beams and was previously balanced with a set of those dome TRW pistons that have had their domes and alitle of the tops cut down and some weight taken out of them at some point so going to a new TRW piston would probably require a bunch of heavy metal to get it balanced again but it is an option

If you wonder what im trying to do, it is to get the remains of a broken engine brought back to life with a new block while avoiding a ton of machinework. The old block was heavily decked and thats the reason for the odd pistons it had.

We will see where this ends up i have plenty of time still:)