What Mr. Bigwheel said:
Fewer teeth = fewer teeth. Luckily he rides with a Dentist.
My #1 350 came with a 47 tooth rear sprocket. I was not familiar with the bikes then and thought that it was stock. The sprocket was not dished and I was having problems with my chain staying on due to incorrect alignment. Also top speed was something like 30-35 mph, which at the time I thought was a design feature of the BW to compensate for the inadequate stock brakes on the bike.