Mike,
If you go with McLeod get your part numbers and give me a call. I sell their products at jobber, it should be about 20% less than they quote you. I think Red will agree that 500 ft. lbs of torque with a blown motor is a little much for a single disc with kevlar on one side. I'm not saying it won't work, I'm just not sure how long. Get several opinions and spend your money once.
David Kee
http://www.4speedtoploaders.com/mcleod.htm