Congratulations and welcome to the group.
We've had a lot of fun on our S2 27, and the info accumulating on the site has been very helpful.
I've never pulled the mast on our boat (#50, keel stepped), and apparently only a few have deck stepped masts and compression posts. There's at least one among the group. Check the photos section to see who's it is. Maybe some close ups will help you convert. With enough fiberglass and aluminum or stainless steel, I suppose just about anything is adaptable.
My next project is to replace the holding tank. And then, sadly enough, she's for sale.
Enjoy,
Bob