Looks like I need to replace the TC on the Mav. Had a driveline vibration issue checked at a shop I trust when I had the u joints replaced which turns out they needed and the reason for the vibration was pretty much confirmed by both my mechanic friends when they test drove the car for me. In the listings, they show more than one bolt pattern diameter. Most listings say the 9 1/2" is the correct one for the C4 with a 250. I ordered one which is supposed to be here tomorrow. Just maybe being a little paranoid but I wanted to make sure I got the correct one. What surprised me is that even the Ford factory shop manual didn't have anything about specs in it.