I've been following your s54 build post for post for some time now! I am over at bimmer forums doing my own s54 build as well
If you have a moment, I have some questions for you that would help me greatly!
my email is firstname.lastname@example.org
this would be the easiest way for me to communicate.
is this the flywheel you used? it says on the listing it is only used with m3 clutch, but i have a 328is so will that work? I'm also using the 5speed tranny.
Also, which motor mounts did you use? looking to upgrade my tranny/motor mounts. do you think the z3m motor arm is needed? how much was it?
if you have a moment, please get back to me! You see mlike the guy to speak to on this subject.