Does the transmission look similar to this one? This is my Borg Warner R10 3 speed w/ OD: http://rides.webshots.com/photo/2288361650100720268ZocgBA

This is where the casting numbers are on it that says what it is: http://rides.webshots.com/photo/2225115630100720268PgsrTl

That's on the same side as the solenoid and the shift levers on the tailshaft housing.