Hi guys still kinda new to the scene, so i appoligize in advance for my lack of knowledge. Bought this late model 01 last year bone stock 5sd with 75k, since then im at 93k ive added a CIA, BBK LT's, Off road X, flo weld ins, 3.73, SCT tuner and some other non preformance mods. Took it to the track last year and ended up blowing a plug. a selive was put in and then ended up coming out when i changed the plugs a few months ago guess i shouldnt have changed them... it hasnt blown out yet put makes me nervious I was looking at the cheap way out, just finding a stock head and bolting that in but everything im finding isnt very reassuring... so i looking at the Trick Flow Twisted Wedge heads. I would like to run a new, bit more agressive cam without lossing my drivablitly and not having such a lopey idel and still make some power. My research is confusing me more than helping and i know there are lot of threads but i need some direct help! Valve clearence seems to be a hot topic especially with the year of the car. if i run a mild cam (.550 lift is mild?) would i need springs, rollers, etc PTV an issue?