I love old mustangs, but they are still 35 year old technology now. Kind of hard to compete with the new stuff. Here is my list of upgrades. Some of these are in my 72. Stiffen up the chasis. Chasis flex with defeat suspension. Subframe connectors are good. How about adding a stronger shock tower brace and maybe a monte carlo bar? Go with a preformance suspension package like a handeling package from Mustangs Plus or something like it. I have 620 front coils and it helped a bunch. Along with these parts rebuild the A arms and suspension components and use poly bushings. go with poly engine and trany mounts too. Front and rear sway bars and a slight lowering of the vehicle. This should improve handeling quite a bit.
I have the preformance suspension, 1inch front sway bar, rebuilt front suspension, poly bushings on almost all suspension components. Rear sway bar on the way. These made a vast difference in my car. But I just got a GMC 1500 with the trailering package and my new truck corners nearly as well as the car (it is truely good) New car proformance just kicks butt.
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