I ordered a set of Spohn boxed lower rear control arms to beef up the rear suspension a bit and eliminate any possible wheel hop that might happen if Whipple ever ships my blower and I get it installed. Plus they will look cool. I'll order new OEM or Moog uppers too so all the bushings will be new. I didn't need the adjustable ones and these are beefier by far. BBP refunded me some cash on my blower due to their cost being lower than expected so I figured I'd better blow it.