i just purchased a 30,000 mile l67 off of craigslist i want to change the gaskets and cam it . just not sure which cam i want. it has to be street able not have to do headwork and if possible not have to change spring or retainers which would lean me towards the vs but i do want to have a nice sounding idle which pushes me towards the xp or slx . also would like to still keep decent gas mileage.....so basically i have no idea what i want someone nudge me in the right direction. it is going in a 99 gt with the gt trans some speed daddy headers and a canned tune (of which i also don't know who to use advice would be appreciated)..........also last but not least it will have 22 inch rims if it matters (let the hate commence)