Hooker 6114 do pose some interference problems in a Mustang. Best I remember, I had to grind a little off the starter hump on the passenger side. The driver side was even worse where the headers swept back - lots of grinding. Of cource this voids the warrenty and you will never get it past a tech inspection at the track. But for me I didn't care as I don't run in sanctioned racing - just wanted insurance for my feet. If possible do a mock up out of the car and do whatever grinding then. Laying on your back eating hot grinding dust is the pits.
