Wheel hop is usually due to axle twist. Stock upper control arms kinda suck, too much flex, get some tougher ones for sure. I know more about fox bodies than the 99-03 stlye though, but I think they have similar stock rear susp problems. The stock rear control arm set up allows for 4-5 deg of axle twist which is yucky. Not to mention that the stock uppers allow side to side movement of the rear axle, but that's more of a handling issue not a drag issue. A torque arm/panhard bar combo like the one from Maximum Motorsports solves both of these problems.
__________________ 86' Mustang GT
-155k miles bone stock still purrs
88' Mustang GT T-Top
-Frame off'd. Built 347, tremec tko road race 5-speed, stripped interior, no stereo, caged, race seats, Maximum Motorsports susp incl. PH bar & Torque arm, Bilstien shocks, H&R springs, 5-lug conversion, big 4-wheel disc's, American Racing Torq Thrust M 17x9's, 3.73 gears, TOYO RA1 tires, Cervini Cobra/stalker body kit, 2.5" cowl hood, painted flat black | 
how do I stop wheel hop 
