I had a chance to run the EVO2 IIC car with the RFG in Mod and Stock. The car seems to have more rear traction mid corner and corner exit! The balance is near perfect now.
I ran the stock car with 48 pitch and no SD[x] without problems. Generally I would strip a gear on a hard hit, but this wasn't the case with the RFG. The Mod car was run with SD2.
If you want to view my mod run have a look here at 1:43.
http://livestream.com/tvtruck/events/4372900