jcurt, chat with Mike Casady - Bill sent him a sample 86* block a while back, and Mike was looking into making them. The problem is that Mike's extrusion for his 45 grip blocks isn't suited to the 86* block. Maybe you guys can collaborate?
Pachmayr Vindicators would be great (so mad I sold the last one I had), but my vote would be for a standard 45 grip block that accepts M1911 mainspring housings. Have pondered doing a product like that myself, but will probably never get around to it.