my 2-cents worth... you definitely need E32 thrust arm bushings if you don't have them. dinan and some others sell them shaved to fit or bmw used to just spread out the fitting on the body so the stock E32s would fit. also... the E32 front rotors are a cheap alternative to the M5 rotor at half the cost. but... brake rotor wrappage is a common, recurring issue with these cars.