Hmmm i dunno about controling wheel hop. Alot of stangs have them removed already. I think they're just to dampen side to side movement since they mount from the body to the control arms. Normally stopping wheel hop is acheived by stiffer stronger control arms with stronger bushings.
Yes they will help with wheel hop and all Mustangs and control arms are different, some can get away without running them while other must have them on there!