Transmission Options

Hello all, its been a while since ive posted in this forum, but! I have a 70 Duster with a 340 bored and stroked to about 422ci and currently a cast aluminum case a833od trans behind it. The engine has way more power than that tranny can handle as ive already broken it once but had it repaired to get me through the rest of the season. But now im looking into getting a trans that should hold up to the unknown amount of torque and horsies this engine has to offer. Ive read several threads about possible Hemi OD trans from Passon Performance as well as possibly a Tremec TKX 5 speed swap and frankly im not favoring either one of them for differing reasons. Are there any other options for us A body guys out there other than just a normal A833? Id prefer to have that OD gear if possible as I plan to drive my car when I can trust it enough.

Thanks.