yes, but see, i don't have an extra grand lying around to have the block sleeved, so I was asking if the block will hold up alright w/ the setup I will be running. I have been hearing that 11.5:1 compression pistons are going to be really high w/ out sleeving it & runing a 75 shot of nitrous. What compression would you guys recommend? If I dropped the shot of spray a little bit, could I run the 11.5:1's? how much of a power diffrence would I be looking at between those & other compression ratio pistons?