///m3 is going to 'rape' the competion...think about...the non-M version 335i is not a huge deal slower than the rs4...the m3 will be lighter and more powerfull and geared better...it 's gonna be a rocket...plus from the looks of it the AmG 63 engines seem to be overated and BMW engines are usually underrated...the c63 will be no contest... the Rs4 is will be the only thorn in the m3's side...also when the v10 came out....the people @ the ///m5 board asked BMW execs what the powerplant was capable of and they said alot more...some speculated 600hp...so im sure 420 won't be hard for the ///m3 and 450 would be a possiblilty..it would be unreal if they can get it from 4 litres but they're the professional in the business...

PS...im kinda sad theres no more inline 6 for the next gen m3...bmw should make the 2 sereis if their is one... powered by one