hey guys, i been around messing with mustangs for years now and i have a pretty good idea on what works and what does not work, so today i installed some suspention parts on a buddy of mines mustang{1991 coupe}, cars pretty stock, headers, h pipe, catback, dual friction clutch, removed all front accesories, the suspention on the car was pretty much beat and shot. so him being new to the mustang craze i guided him to buy upr's street control arm package strange adjustable struts and a set of trick dual rated rear springs, thinking this would be a good setup for a street car. i install the parts and go for a ride from a roll feels great plants tires no hop, we go to a dead industrial park to try some hole shots and i give it a 3500 light throttle launch and omg did this thing wheel hop it was so bad i felt it was going to break something if i kept into it. So i tighten up the rear shocks one click and nothing two clicks nothing three four five all the way to the 12th position and still hops so bad the car is screaming stop!!!!! when i put the contorl arms on i uninstalled the factory quad shocks like the millions of other times. i looked at the pinion rubber bushings looked to be in decent shape but not perfect and i am so stumped, i would take any sugestions to why this thing wheel hops worse then i have ever heard about or seen. thanks alot Tim