I sold a set of Z3's and the front hub and QR to a mate and I don't think he has used them. If he still has them I'll get him to drop you an email.
I've checked and he does still have them. They have the original Marzocchi front wheel and QR with them. I know you only wanted the parts, but I expect he'd sell the whole lot for £40 collected from Bristol or £50 posted.
a bit light on retro rides right now!
05 Cinelli estrada
93 Saracen Ltd Edition - In need of love
93 Ozone O2 E-stay (the wife's)
2013 Whyte 129-S