Couple months ago I searched the hell out of Athena's website and found the specs on the banshee kit, it was pretty mild 55hp @8k rings a bell. Its a major pain to find.
I'm probably going with the vito's 421 BB for my road bike project, sounds like a good compromise between price and power spread. I was leaning towards a cub for a while but drivability is a factor when navigating through a city on a peaky bike.