Hey, im doing a b20,vtech, supercharge. build in my type r. I have a couple of questions. first off i have a b20 b4 block. stock. and i have a b18 (gsr) head with skunk 2 , double valve springs, valves, and retainers. Ported and polished. With type r cams and aem cam gears. Now my question is that ive been hearing that the stock rods and pistons of the b20 are too long and will cause problems with the valves. therefore i need to get shorter rods. I was already but i didnt want to get the wrong ones. I need to know what size rods i need so that i can be safe. also i heard that b20 engines cant be revved up higher than 8k is that true? even after all the work i have on it? im thinking of up grading to 10:1 compression from the sucky 8:1 the stock b20 motor has. Any other suggestions before i put it together? other than a block guard.? thanks alot for the information i really appriciate it.