Im in the process of building a 91 dx with a d15b bottom and a z6 head. I am building the car for boost i have settled on eagle rods but not sure about pistons. I have heard some really impressive numbers with vitara pistons but i have also heard that they are common for being loud and making a "Slapping" noise. Since i am in college and working part time this is a budget build. I was wondering if anyone has actually used vitara and what your opinion was?