3B tranny same as MC-2 tranny?

[auditude at cox.net]

Or, "All 200 quattro trannys the same?"

I would like to know if the '91 200q20v had a different tranny than, say, a '90 200q10v, or an '89 200q10v.  I know they are all that all have that certain torque-sensing diff.

Thanks,

Ken