· NASA Rally Sport grassroots!!!
Saw these at PRI. The ID is 46mm, the OD is 50mm (just like DMS). So don't get too confused by the "46mm" terminology. Street price is supposed to be $549/corner. It's designed so that you machine the tops to what you need, and you weld on the ears/mount you need at the bottom. They plan to introduce adjustable valving later (and can retrofit it to these).