Just a quick question. My brother order the wrong piston. Told him jdm p73-00 but he ended up getting a usdm p73-A00. Was just wondering will it make any difference if I just use the p73ao with the p7300?? Stupid question but I can't wait and need to get the car running. YES? NO? Just that the compression is just going to be a little lower than the jdm.