Cardone motor looks like a perfect match! I did have to cut and splice the original connector (replacement motor came with a pigtail and a pair of vampire clips for splicing... naturally, I saldered it instead...).
I was also able to determine why it was so rusty on the inside! New motor came with "u-shaped" vent tube. The vent hole points to the top and this vent tube prevent water from entering the motor. Needless to say, my old motor didn't have that tube! So it must have been filling up with water at every rain! Make sure you do not loose this tube (as it is easy to remove without noticing it!).
Two motors side by side (with and without the tube).
Now I have a working window with what appears to be a very worn regulator . I do not wan to bother with another used one, so what are the best new options? I see that Merlin has them for around $95, but what about aftermarket peplacements?