Hello every one!! I am new here I have a question and need some professional opinions!! I just traded my 96 Z28 for an 04 Grand Prix GTP Comp G. The guy that I traded to put a L26 bottom end only in place of the L32 bottom end due to a burned piston. I know the L26 has flat top pistons and the L32 has dish. I have to pull the heads he told me it had a warped or cracked head it was getting coolant in #4 cylinder. Will I have any issues with compression or issues with it blowing gaskets? If the heads are cracked or warped what would you guys suggest I do. When I get the heads fixed and back on will I have to have my car tuned. I am in need of some good information if some one could HELP ME IT WOULD REALLY HELP ME OUT.. THANKS