Got me some 97 explorer heads and a cobra intake, hopeing to get the 1.7 rockers.. Going to get a 70mm MAF and a larger TB. What would be a decent cam? 99% street driving. the car is an AOD so basicly I'm looking for a bit more down low but don't want to give up anything up high. cat back flowmasters 40 series with cats on for now. 91 5.0 auto. any sugestions