I have an older Vanilla RC. I just scored a ti spring only to learn that the ID on the RCS spring is too large for the preload/spring collars on my older shock.

I guess I need to know if the threaded part of the shock body is the same size on the two shocks. Will somebody out there check that out for me please? Can I get a preload and spring collar from a different shock and use them on my Vanilla RC? I don't want to sell the ti spring, its the correct rate and size and it was cheap. I'd like to find a way to make it work on my shock.

Any and all ideas are welcome.
Thanks.