Hello!! I am a rotary Veteran and not real familliar with my new 2003.5 P5. It is an awesome car that lacks power. I know all about what I need to do to get it more ponies, but there are quite a few companies that make: intakes, exhausts, ignitions, cams, etc. So the real question I have is "What companies yield the best HP increase in these areas?" I do not want to waste my money on junk either. I'd rather make my FC3S faster than piss away money on a crappy P5 header b/c I got it from the wrong vendor. Thanks in advance!!