Quad shock bolt size?
Reply #4 –
So the brackets to the chassis take an M12 coarse (1.75 pitch) x 30 mm, 9.8 grade. The hardware number is still available from Ford and reasonably priced up here in Canuckistan, but I don't have access to the U.S. pricing ... number is N605933-S2. The quad to axle bracket, couldn't find any dimensions on the T-Bird number, but I did find them for Fox Mustang which I assume will be the same. M12 coarse x 70 mm for that one, available as Ford hardware # N606084-S426, also 9.8 grade, and the locking nut to go on it is N800937-S437. There is still some stock showing available in Ford U.S. depots if you want to get the OEM fasteners. But I imagine that you could get the right sizes at Lowes or Home Depot too.
cheers
Ed