Good question. Not sure, it was ordered from Zspeed by the shop that did the install.

I was just checking to make sure that it wasn't some other hd master I hadn't heard of that also fit the Z. I know Joe doesn't have any options for the Z, so that answers that :tiphat:

I've got one of the first batch of RJM Performance's new hd masters reserved. I expect to have the product in my hands and installed in the next couple weeks :tup:

Unless its a prototype deal then as far as I'm aware they only offer replacement oem mc's and rebuild piston kits for the 370z and G37's. A quick photo of your mc from the engine bay side would show what it is though. I don't beleive there is any more room around the G37 master cylinder than on 370z and depending if you have an early model G37 the factory mc can be more difficult to remove then a 370z one.