i just got my car checked out by DPR, a domestic car performance shop that specializes in mustangs, and they said that the clicking noise that i hear is an internal engine problem...the car makes a clicking sound whenever the gas pedal is between 10-40% pressed down, it sounds like its coming from the rear endof the engine. i have a 2001 bullitt, its not stock, but the noise was there even when my car was stock. anyone ever had the same issues?