My heads are ported by C.F.M. of Indy with 105# springs and stainless exhaust valves. The cam is a comp grind with 531 lift intake and exhaust. I don't remember the rest. I am running an M90 ported by Gore Racing and Performance of Louisville. The clutch is a stage 4 spec (slips) with a custom made 40% stonger pressure plate with 3.65 rear gears and an stock open differential. The car is currently broke. I grenaded the spider gears accidentially launching from 4000 rpm on the street. Planning on being the first to put an SRT-4 tranny in a fiero. Just waiting till I am in a house with a garage. Can't convince the wife to spend a few thousand more dollars on a car that doesn't have a garage to keep it in.