Blow up carnage and rebuild

im starting a new thread for my engine rebuild, I finally took it all apart and took the motor out of my blaster, the piston has a nickel sized hole right in the middle of it, the rings and side of piston seem to be in not to bad of shape, the bore is in GREAT condition still, no scratches gouges or anything. it had 150 psi before it blew. im thinking it was a airleak but forgot to leaktest before tear down :( , after a long hard ride it would rev up at a stop and going slow in 1st gear it would pulsate and drive on its own until I hit brakes. so airleak im guessing. I think I may just throw in a new wiseco piston same size and clean the bottom end and call it good, it has a wiseco crank I found out also I:I , let me know what you think. also all my mods are in my sig. I also had a 350 main, so again, airleak maybe. ps, I found a small crack looking thing at very bottom of sleeve were its paper thin (pictured)



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Im not sure that is a wiseco crank heres a pic of my wiesco