People say these are weak but in my honest opinion the power felt like the 865 air cooled Bonnevilles. I can confirm since I can 3 of those darn things. I thought it was felt faster than the v7 ... I love V7s but man, they're slow. Only issue I have with the 650 trin is it felt kinda small. And Im like 5'9". But that's just me.
I think these 650 twins all "sorted out" would be sweet. An 865 kit would be pretty cool.