I Have other blocks at the shop I could use. This one im using was given to me for free so I decided to use it. I probably damaged the threads when I spun my hub and put a new head on the motor. The one 9mm on the corner threads in the block were not engaging very good. Had intentions of keeping it on wastegate till my headstuds were gonna show up that didn't last to long, turned it up to 25 psi and lifted the head. Either way even if I do keep using my current block or use a new one im not gonna slap headbolts in it again they seem to stretch to much under higher boost. Plus i just bought some darton sleeves so boost is gonna get cranked up even higher when they get put in. Plus I just honed the cylinders in the block im currently using and my mahle pistons just broke in. Was planning on tryna make 900whp on this ol 200k block before I sleeve it or a different one