78 z1r question

I have a 78 z1r at my work and I need a front master rebuild or at least the seals. Does anyone know what is interchangable with this? The factory parts are no longer available and I found a thread a few days back but no one answered what the parts they used were from. If someone could help me out that would be great

Give Jeff Saunders a call at Z1Enterprises.com - he will know, if anyone does.

I used KL Supply part number 32-8052. Piston matched up perfectly and bleed great. I can lock up the front wheel with one finger now