I did the SE 103 kit in my 11 SG and 255 cams. I ride 2 up a lot and wished I'd done the 254E cams for a little more top end pull. Bottom end is the same as 255's just a little stronger on top.

 

I have a 2010 RGC with 103 light weight head work & D&D 2into 1.I have more torque than HP but I'm happier than crap with them.My cruising speed is 80 (mph CA HWY 14) at 3000 R's if I want to get on it I twist the throttle and it just pulls right past 100 mph.There are a whole lot of faster bikes out there but for what it is CAN'T beat it.