found a nice clean 72 cutlass supreme (33k miles, all documentation, zero rust) with 455 (Ga heads, W exhaust manifolds)...how do i tell if it has the 442 suspension goodies?...it has what appears to be a 3/8???? (maybe 1/2 inch) sway bar attached across rear axle and what looks like some beefy shocks...need any help you guys can give me on this.....