Recommendations on Transmission Rebuilders

[Elutheros]

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 trust to supply a reliable transmission?

 

[Eddo Rogue]

Maybe find a local transmission shop with a decent rep. Luckily I got a few around here, one is actually a buddy of mine and a badass. Everything I've taken him over the last 20 years has never broken again. I can fwd info if you want to deal with travel or shipping. It would be a good excuse to visit LA, and you will probably appreciate Texas even more after...