Where are you located? If local I could come about some day to check how the frame fits with your engine.
I appreciate that I could faff on getting the frame modified but I just don't want that carry on.
Rad have done something like that
http://www.radicalducati.com/index.php?page=99-evo and it looks like an ST2 engine needs modification with a cross member in 749/999 style to fit the throttle bodies.
On the other hand I have a bit of a hope as the 998 or 996 Foggy frames I would be working from (got both) have the "kyalami" cross member so maybe it would work with them??