Thanks for your reply Erik!
This is pretty much the best I can give you at the present for specifications.
Apparently I can't even post URLs to my posts in this forum yet, so go to google, type in "tamiya plasma edge motor", and click on the second link from the top. A good number of the specs are listed there at that URL.
The motor is a 540 Mabuchi, like I said. I don't know anything more about it than that. As for how many turns the motor has, no idea. I would think it's a 20 turn?
Does this URL help at all so you can recommend me some motors?