I am not a Ballistic owner but have been around drives. Give Shane a day or two to answer in the past he has been super busy.
So looking at other drives for an example.
The Rotator and Torque drives use a soft drive plate in which the bushings are captured in the plate. They are not user replaceable.
Stinger uses rubber or poly bushing system that the user does replace. I have seen two different colors of bushings that are alternated when installed. They just push in and from what I have seen. The one color is softer than the other and requires replacement more frequently in that system.
Ballistic has a web site with drive installation instructions but soft drive info is not included.
Biggest issue installing a drive is to make sure there is no pressure or interference between the drive and the flex plate. This includes the hardware such as bolt heads making contact.
Ballistic recommend a JW Flex plate and caution against use of another due to alignment.
Appears they need 32 oz of either Amsoil or Lucas 75-140 or 85-140 gear oil and advise only those specific brands due to testing and foaming concerns.