I believe the main shaft would need to be changed to switch over to the shorter tail shaft. I'd have to look at an exploded view again to be sure...Mike Maier would know.
As far as trades. I've got all the Mike Maier goodies under the car and am only needing motor goodies and motivation to complete.
I'll look into what exactly it takes when I get home later tonight and let you know.
Happy Independence Day!