5.7L pistons

Probe Ross mahle cp bullet series, I'm probably missing some but the stock pistons are to much of a risk unless it's bone stock, your best way to stay in budget would be a 6.1 crank because there forged and not cast like the 5.7 and same specks get a set of shelf pistons that are .020" over from weisco and k1's stock length forged rods. You will have a forged engine that is way stronger and not break the bank. Then you can upgrade your heads and so on when budget permitting.