I have Dorman front lower control arms on my 240sx. They have been a problem since day one. Been aligned twice and they still cant get it in spec. Bushings are too soft and on one of them the tension arm bolt holes were drilled at the wrong angle, so the caster on the drivers side is messed up. In the process of ordering Moog ball joints for my old (factory) control arms, once I get those pressed in I'm putting the old arms back on and chucking the Dormans in the trash.