This is what I did a couple months ago. Very simple.

http://www.classiczcars.com/forums/wheels-tires-brakes-s30/49080-wilwood-master-cylinder-install.html

I think I paid $134 for the MC from Silvermine Motors.

I am just going to go that route. I thought I could just pull everything over from the old MC and put it onto the new 280ZX MC. But, I guess not haha.

The only thing that scares me a little is that you added that piece of copper piping. I don't have the means/tools to get and cut that piping.

I also noticed that you are the only one that has talked about having to do that when installing the MC. Any reason for this?

The brass filler ring tlorber used is not a requirement. Good idea though, but not critical. The most crucial part is getting the correct spacing of the end of the brake actuator rod to the piston face in new master. The hybridz thread A One Inch Diameter Brake Master Cylinder for the S30 Z Cars - Brakes, Wheels, Suspension and Chassis - HybridZ details this process well.

I do what to thank tlorber for his thread, as he pointed out a critical detail that I need badly on my car, ie the ability to reverse the bleeders to the other side of the WW master! My custom air box fitment is just a tad snug with the bleeders on the engine side. Thanks again!