Back in the day I bought a clutch MC from my FLAPS whose piston was too short. The pedal was never able to return to the stop and the clutch never felt like it was totally disengaging. My car is a 7/72 build, right on the cusp for some changes so maybe I think I ordered the wrong one?

Anyways, which do I need? Can I order, say, a '71 or a '73/'74 just to be safe? As information, I'm ordering the MC, slave and lines as a set.

Thanks.

I'm not sure about the 72, I bought one for my 70 and the shaft that connects to the clutch pedal was shorter, so I simply changed out the one from my old MC to the new one, it's really simple to do. There is also the option of buying a rebuild kit and rebuilding your original unit

Thanks for the reply. Unfortunately, my original MC is long gone, so that's no longer an option... As mentioned, some years back I replaced it with the shorter piston unit and drove it like that for a while before the car was parked. Now I want to get the RIGHT part.

Bump. Been doing a lot of searching and most folks say the consensus is that it's a crapshoot which length MC piston you'll get when ordering. There doesn't seem to be any rhyme or reason with respect to the model year of Z. The standard "fix" is to reuse the old MC piston, but mine is long gone.

Looks like I'll just have to call the parts guy and have them measure the rod and make sure it's 3/4" or so longer than the one I have. Wish there was some way to tell conclusively which one I'd get when ordering, though.