to determine a transmission if it’s broken or good, while it’s not installed?
I have two of them and I would like to install one but, while they both engage in all the gears by hand, I have no way to tell they operate properly under working condition in the car.
Maybe there is a way to find out it is good or not.  After all, how does a transmission guy know that his job is done well other than being installed and used.  Especially if it’s an automatic one.  
Anyone has an input?
Thanks for the Great List,
Best wishes to all,
Zoltan