SB or BB a body debate

What pistons? I have personally seen garbage 360s eith home pocket ported heads run low 12s at 110.You need to 9 to 1 ,worked Js of Xs.
I'm not sure off hand I was told they're KB's and the only numbers I found on the pistons came back to Silvolites (Hyperuetectic or however you spell it) they're nice flat top pieces SO to be honest they look like hyper's from the top but could be forged

I traded a B body small block 4 speed setup/swap for the short block w/ 284/484 flat tappet cam/double roller chain, and 92 magnum heads that needed a TON of work- plus a bunch of other stuff hahaha