If you look at the specific Tarozzi brace for the 650, you'll see it has added "lips" on top of the part that clamps onto the lower for the dust wiper to snap onto .....
Personally, I run an ATK brace on mine. Similar to the one Machine showed, but nicer I think because it's more streamlined and compact .....
It also has the added "lip" on top for the dust wiper, or in my case the gator .....
I think I saw that brace you bought but passed on it because it didn't have any provision made for attaching the dust wiper. Instead, I found another ATK just like I've got, and in fact, I think it came from that same seller. It was quite a deal. The auction was one of those "... or best offer ..." ones. The seller wanted $40, I offered $30, and he took it.