Well there are plenty of thing you can do to upgrade your suspension. I personaly have 5 leaf lifts springs, 620 springs in the front, kyb shocks, thicker front and rear swaybars, polyurathane bushings, shelby quick steer set up, under rider traction bars, comp. eng. sub frame connectors, export brace, monte carlo bar, racing shackles, and other little things. As you can see there is plenty you can do and spend on. I mostly got all of my stuff from
www.mustangsplus.com they offer great magna products and the staff is friendly. If you really love your car and plan to keep it you might want to look into the rack and pinion set up. I know I am total control products sells it.
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67'fastback- Edelbrock carb, intake, cam, valve springs. Road lifters, Comp Cam rocker arms, windage tray, cerama coated headers, dual flows with H-pipe, modded c-4, tci stall converter, perma cool electric fan, aluminum water pump, griffen aluminum radiator, accel 8.8 cable, wide cap distriburator, magnetic pick up, manley valves, v-matic hurst shifter, edelbrock performer nitrous, carter electric fuel pump, ignitor coil, solid motor mounts, magna racing suspension, poly urathane bushings, und