[QUOTE=39 master;4654853]That appears to be a stock MII unit right from the junkyard and has been converted to coil over shocks. It also appears to be a power rack, correct?
Are the lower A arms parallel to the ground?
It also looks like the springs have been adjusted up to put more tension on them which would reduce travel and give a harsh(er) ride.
Probably adjusted this way to lower the car, but results in a harsher ride
Do you know the weight of the vehicle?
Probably around 4000 lbs. It's 4300 curb weight with the V-12 and estimate the 350 SBC knocks 300 lbs off. Not sure how the Mustang II vs transverse leaf affects the weight.
Take it down to the local truck stop or wherever and get the front, rear and total weight so that a proper spring can be ordered. What are you planning for upgrades?
None, just want to maintain ride height and improve the ride
What is the rear suspension?
Conventional leaf springs, transverse leaf is gone. 9" Ford rear.