If you were going to replace your 30yo tranny (mine is a 343) with something from an aftermarket rebuilder (meaning not just your local trans guy, rebuilding yours while it's out of the truck)--who would you go with for something overbuilt that's gonna go another 250k miles and can handle a S/C or T/C? I can think of one or two names, but I don't know what I don't know... Thanks!
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