Can I use B or C body manifolds fore better flow on my sleeper GTS?

These are the pistons I went with:

Mahle 929962275 Mahle PowerPak Piston and Ring Kits | Summit Racing

I was lucky enough to gst a break on the list price thanks to a kind soul offering their summit discount.

I was using Diamond pistons however the prices increased and it would have meant waiting even longer to save up for a set. As I mentioned above we are looking into running a set of these fancy top rings to helps retqin ring seal with the nitrous:

Mahle 4375GNS-15T Mahle File Fit Rings | Summit Racing

Hopefully I can move some parts to cover a set of Molnar billet h beams with ARP 2000 bolts. My budget is funded by side jobs and car/parts sales so I will have to hustle to make this happen by June. For now the juice cammed 451 will have to do.