hey there, can anyone tell me what brakes can be used on an e34? mine is currently running 520i 12v solid disc and standard calipers.....I happen to have an e28 528i caliper and ventilated disc set lying around...will this bolt on and be useable? if so it should provide a slight braking upgrade right?(owing to the ventilated discs)...IF NOT, what other ventilated discs can i use with the standard calipers? 730i or 735i E32 discs maybe? thanks in advance!