rebuilt transmission

Hey all, Running into some issues with my ranger transmission. Long story short, swapped the valve bodies to take care of flare shift, bolt head broke off with the refurb in (classic, feel like a moron), now no gears. I'm getting it towed to a local transmission shop I know nothing about...

Well, my M5R2 is whining for a replacement. That's the drain plug for the transmission and the fluid looks like metallic paint. I'm looking for a rebuilt/remanufactured replacement. I decided not to go the junkyard route as everything is high mileage already. What companies out there can you...