@MuchAlohaNui
You'll find the post somewhere, both of us are on the thread.
( edit
https://www.retrobike.co.uk/threads/rock-shox-mag-21-style-air-needle-valve.268636/ )
What sort of rebuild kit do you want.
Bushings, I have a few sets but they are not often be needed.
Oil seal, they're out there and I have a few spare original sets. Note if updating MAG20/30 to newer seals you need to alter the metal ring/oring setup a bit.
O rings & Circlips, just measure them up.
Dust wiper seal, well they're not needed (use boots) ;-)
Boots....
The set (MAG I forget, 30 probably) with the different air seal set.. well they're bugger anyway and I can do it, but I'll swear a lot. Just get some different MAGs ;-)
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Excellent
@My_Teenage_Self