Buy some headers $88.00 http://www.ssautochrome.com/level.itml/icOid/1494I've had the same headers for over 2 years, still working great, no leaks or cracks.Buy a Intake $20.00 http://cgi.ebay.com/ebaymotors/Bomz-...m20.l1116These together will make the biggest increase in HP for the least amount of $$.Edit Singh doesn't know what he's talking about. The ari/fuel ratio is controlled by the computer. So whatever you can do to make the engine "breath" better will give the engine more air and the computer will figure out how much more fuel to add to maintain the correct A/F ratio. That's the principle behind the K&N filter. Less restriction, more air = more HP.