Just got a reply back from Scootworks regarding the kit for the America/Speedmaster and they stated to simply order the Bonneville kit and in the comments state it is for the America and they would sent the proper sprockets/belt.
My only concern is will the Bonneville rear sprocket fit on the America? Gregorz says they are different!
I asked them for confirmation that the rear sprockets are interchangeable? I know that the Bonny has a 43 tooth rear vs the 42 on the America.
What a pain.