There have been quite a few Oklahoma members over the years, but they come and go. I'm in northeastern Ok among the Cherokee nation. Redtele58 is to the southwest. I've met a few from the OKC area and Tulsa.
Cimarron PCA is a good group, but I haven't had time to participate for the last year or so. If you need some used parts let me know. I'm not much of a seller but after buying too many 986s in various condition over the years I've got some spares and could probably meet part way towards OKC on a good day.