ok guys im debating on timing chains here and im hoping that a heavy hitter like musicman or libertyforall chimes in. i wanna know which double roller timing chain is the best. planning on testing the sheet metal intake with nitrous within the next month. have a cardboard mock up made just need to take to machine shop and have it made up. i recall jp being the better choice bit rollmaster is like 200 dollars. like i said, you guys tell me cause ive always went with a single roller