i have a gsr with its pistons. the current setup has about 130000 on it. i bought a kit. t3 t4 turbo. i was wondering if anybody has ever boosetd one? i kow the high comp an the its ring lands are a major factor. i want to find another block to build it but until then do this. i just want to get some feedback on this from people that has the knoledge about this. i mean i was thinking i could but no more than 5psi. which would still make power because of the high comp. i duno, just me thinking and reading. but me thinking is allways a bad thing. lol. im open to comments.