I decided to go and buy the stepper motor kit from Amazon. Sold by Long's Motor, this consists of 4 nema 34 motors (1600 oz/in), 4 DM860a drivers, and 4 power supplies. I bought 4 so I would have a spare of each. cost was $640, free shipping (not prime). I'm assured that these parts are made of 90% pure Chinesium, and are guaranteed to work correctly until connected to a power source.
Jason