My advice, get what you can get. Even if you don't use it, trading material for later. But it would depend on shape and price really. 200x Bassani or Supertrapp, used is tough enough to find, NOS, good luck on that one. I'm always looking for things like that. Trust me on that one.
Nicholson 500x (Project)
Nicholson 185s
Nicholson 110 (That takes an atc70 tank)
Ascott 500 head/350x (Project)
Homebuilt Racer Chromoly Suspension 110 (Ragin Runt)
PK Racing Suspension 70
A+ Inc Suspension 70
AWS Aluminum 90 frame
Hi Performance ATC Suspension frame rd350
Hi Performance ATC Suspension frame 90