CPI vs Yamaha BWS wheel drive splines same?

[CPI Guy]

Hello I am wondering if anyone can confirm or deny if the CPI Tracker/JV50's "output shaft" is the same spline as the Yamaha BWS?

I know they have different size wheels... But I have a custom sprocket adapter made from a old CPI Rim. I am looking at replacing the motor (was CPI) and purchasing a very cheap BWS for the motor. I don't want to have to ruin a good BWS rear wheel to make a new sprocket.

This is on a trike build so I can mount the new motor/trans if I need to make brackets or what ever. I just need to be able to slide the sprocket onto the BWS power plant...

I know both are Mineralli style (kits and variatiors being equal) but the fact they have a long case or short for wheel size make me wonder what else may be different after the final drive gears.

If they are different splines.. is the final drive output shaft interchangeable? (take the CPI output and install in BWS box)