I thought they used the same frame but I could be wrong on that.
You might try posting on the BP section of this forum as there are a number of 'em that use conversions I'm sure.
Also, you might try the CAS site.
Whether you're in to CAS or not, there are a few on each site that could probably answer your questions and who have more experience with the conversions of the various models.
Good luck . . .