Actually (and someone please correct me if I am wrong, asI don't have a good brace yet) that is not brace you will want. Sure, it will clamp onto your stanchions, but it doesn't limit the flex the way other braces do. The sort of brace you will want are the kind that actually clamp onto the very top section of the fork lowers (do you need to remove the boots for this? I seem to recall there being a groove that originally served purpose to keep the boot in place, but is subsequently used as a seat for the fork brace.) Search around the forum, and you should find some of the braces like I'm talking about. IIRC, there is a HD brace that can be used (not sure of modification.) I'll try to find the threads as well.
-Chris