I am converting a 4 cyl coupe to Mass Air 5.0. The motor is remanufactured out of a SN95 so im guessing it has been bored im guessing 30 thousands other than that its completely stock . Had to replace the whole wiring harness in 4 cyl. b/c some idiot desided to straight wire head lights tail lights and some crazy S*** at the solenoid. I am going ahead and installing a 255 fuel pump and a bigger mass air sensor and throttle body. Looking to put a top end kit in at the begining of next year looked at TFS 360 top end kits but of course i want more out of a (NA) car. Trying to do some research on AFR heads. Just can't decide on intake, and cam combos dont wanna tear into bottom end just yet. 185 AFR heads are looking pretty good. I Just want to go farther with the heads when i decide to tear into the bottom end. Any input is appreciated.