[QUOTE=pcombe;652531 This is an Evo based engine and from what I can see the brace wont fit?[/QUOTE]
The Carlini arm is designed specifically for evo's. Is the Ultima block/cam cover different in the front mount area where the carlini would mount to, than what is found on a stock cased evo?
Still have to believe it might somehow help on a rigid but since you're running an open belt drive primary, perhaps the "inner" primary is built more ruggedly than a stock inner chain drive primary???
Another point might be as it appears from your pics your chop has rigid motor mounts vs rubber on stock big twins, the flex would be negligible, making the arm not needed???