my dream motor

more to come on the ideal motor, as I work out a balance between zippiness around town (95% of my use) and touring.
the correct cylinder kit, gears, porting, pipe, carb etc. will be decided later
The frame ( www.dirtyrocket.blogspot.com ) will be the first priority.
Naturally if a motor becomes available with a good kit, that will decide which kit I will use. I don't have the funds to be silly about this.