Just bought an 01' Gt with 7100 miles on it. The vehicle came with nearly $6000 in aftermarket parts. The question is what kind of horsepower should be stock for the 5 speed 4.6?? Second question is what would you estimate the horsepower would be with a cold air intake, 70 mm accufab and plenum and underdrive pulleys?? The reason I ask is that in the book of mods (receipts) that came with the car it also listed a hypertech tune. I am taking the car to a dyno on sat. but don't know if the tune is still in the computer. I need a baseline horsepower with the three mods so that when dynoed I can figure out if the hypertech tune is still in there. I can't locate the previous owner to ask him. HELP Please.