Lets just fix all of this conjecture and guessing:
Piston Rings:
135i: http://www.realoem.com/bmw/showparts...86&hg=11&fg=20
1M coupe http://www.realoem.com/bmw/showparts...86&hg=11&fg=20
INTAKE
135i
http://www.realoem.com/bmw/showparts...55&hg=13&fg=20
1M coupe
http://www.realoem.com/bmw/showparts...55&hg=13&fg=20
FLYWHEEL
135i
http://www.realoem.com/bmw/showparts...87&hg=11&fg=20
1M coupe
http://www.realoem.com/bmw/showparts...87&hg=11&fg=20
Not going to list the exhaust here as that is OBVIOUSLY different(including the midpipe...just not from a visual standpoint...but it does have a different part #) This is just to prove what IS and ISN'T different for those that may want to know
