[nyquil]

I don't mind cutting out the fitting, but since I plan on doing that I won't have a core to return.

And I checked advance auto parts, but when I searched through 1990 and 1991 300zx master cylinders the Only 3port ones I find are bendix or cardone and neither have a imprint or any specific detail in the description on the size.
I also looked up the sticky from freshalloy on how to install the fitting, and his cardone part# brings up a 4port picture on advance auto, but he recived a 3port MC.

Anyone have a p/n they know will work for sure? I'd really not like to go through the trouble of ordering a few of these to find the right one.