looked at buying catback exhaust. rsr exmag is the preferred choice. however, throwing down almost 6 bills for 6 hp is kinda.... you know. so I was looking at ctr cams (roughly 5 or 6 bills) and like what, 10+ hp? my question is can the stock b18c1 valve springs and retainers (2000 model) keep up with the cams? ill be fine shifting at 8k if I have more power. and what about the cheep blox stage 1? i think for 5-6 bills i can buy blox stage 1 cams, dual springs, and retainers.

almost forgot. would I need to do any modifications to the fuel system?