Well the pistons I'm buying keep the stock compression, but are a hella lot stronger. I do want to run higher boost levels, but I'll stick with a low boost level until I get everything running right. And for injectors I'm going to be running injectors from Nissan's SR20 motor, which are 370cc injectors. I do want to upgrade to 550cc from Nismo, but they are expensive...maybe in the future?