a moustache bar. in stock form, it's a piece of spring steel that runs from the dif mount to the backs of the lower control arms on the rear suspension on 1970-1978 Zeds (s30 chassis). it's all kindsa flexible in stock form, which is good for ride, but bad for control or alignment. i'm looking for one constructed of tubular steel, with some adjustability if possible, because I plan to nearly double the output of my s30's L28 engine, and install urethane bushings, and go racing, and i would rather not have to fabricate my own, if i dont have to.