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Message: <blockquote data-quote="jon3171" data-source="post: 15037" data-attributes="member: 14268"><p>my e28 is a 528i with discs all round...many people say to upgrade the front calipers and discs to e32...i just have some questions regarding that:1. how much of an improvement am i going to see...if one were to estimate,...what would the percentage   of the increase in performance be? (i.e 20% better? or 30% better?)2. does the spec of e32 matter? like whether its 728i,735i etc...(im using 17" ac type 2 rims)..so yea m not reli sure if the calipers are different spec and size...3.will e32's brake servo fit my e28?4.is ABS brakes gonna be an issue? as my e28 has no ABS whereas the e32 probably does... 5.are there different types of brake booster/servo for different year of e32? can the different types fit e28? which is the best type?well thats all i guess....looking forward to ur replies....thanks!</p></blockquote><p></p>