I wouldn't be sure the parts would be interchangeable. Most likely the compressor and brake actuating air cylinders are matched. Our Brakemaster 9060 doesn't have any way to control the pressure sent to the cylinder in the toad. Unless you know the pressure and volume of air needed to actuate the M&G cylinder (without locking up the brakes) I would stick with the plug and play system.
Before you make any decision I would be sure the compressor works and all the plumbing and wiring are intact. You can buy a complete "second vehicle kit" for your current braking system from e trailer for about $400.00
http://www.etrailer.com/Accessories-and-Parts/Roadmaster/RM-98160.htmlThe kit includes everything you need to setup your toad.