3320 mid PTO DIA. # of splines?

[OrangeJbird]

Does anyone know the diameter and number of splines coming off the 3*20 series mid-PTO?
Is there a supplier that can provide the couplers to make a driveshaft?
I have project I'm looking into. Don't have my Mid-PTO on yet but need to look for driveshaft parts.
Thanks.

 

[OrangeJbird]

Any one know where to get the ends (like on the snowblower driveshaft) that go from the Mid PTO to the front mount?