Looking for hand brake assembly for T-98 trans

[Studeboy]

I have aquired a T-98 truck transmission to replace the older T-9 transmission in my R16. Looking at the back of both transmissions, I was sure the brake assembly off of the T-9 would bolt to the T-98, but not the case. The output shaft bearing retainer, which also acts as the brake band mount, will not interchange. I would love to have a disc brake assembly for the T-98 if anyone would have one, if not, will settle for the drum style. I am trying to hold a 9000 lb truck in one spot.
Thanks

Ohio
1930 Dictator straight 8
1950 R16 Car Hauler 289/2 duece