Ken Dauzat 6-point mounting ring for an ST80. Mounting bracket radiused to fit the rear cell of a C8. Delrin screws, and large rubber-headed bolts for easy on-off.
Upgraded to Losmandy DC8 system - need to recoup for some of those bits.
$65 + $8s/h new, $45 + $5 shipping (and remember that I added the big rubber knobs for easy attachment/removal.)
Will consider trade (or partial) for Losmandy dovetail finder bracket and block RDF65.