| Why wouldn't you ask davesmotors ??
You say in your other post that they know what there talking about..
Anyway, i'm not to sure that a bike would run with the choke on (as in ride around on it), it wouldn't be getting enough air...
I've got W/C rep carbs on my CAGS, and they run fine, it also made them run slightly better...
I suppose you could fit a Del, but I don't know so don't quote me on it..
Not sure about the crankshaft, but if you have basic mechanical knowledge it shouldn't be a problem.. | 
