CNC and Neal pedal assemblies are virtually the same. I believe the two businesses were one once. I believe the brothers separated at some point and we ended up with two brands.
Anyway, Wilwood makes a clutch master that will work. I believe they are 1/8" pipe thread on the out fitting. Check the bore size and match it before ordering, I believe they come in 5/8", 0.70" and 3/4".
https://www.speedwaymotors.com...8-In-Bore,33881.html
VW master cylinders fit in those pedals no problem, if you need to change that. Get a TRW MC, I try to stay away from Chinese stuff, to fit a disc-brake Karmann Ghia.