Traction Bars would act a little more like lift bars, and that would defeat the purpose of lowering the car(to make it handle better). Some different control arms would help with your straight line acceleration/traction, and would also help keep your tires planted while in the corners. Look into Maximum Motorsports, they have a few different sets of control amrs for your
stang, Kenny Brown, and Ford Racing also make some good arms. Also adding some sub-frame connectors would really help out in conjuction with the control arms, and would stop body flex, in turn making the car handle better.