[Motorola] Maratrac clamshell head and cable

[Jeff]

Is there anywhere on the internet that I can find the schematic for the Maratrac 8 channel head and cable?  This would be the very basic head and cable setup.  Could a Miterk head and cable be modified to work?  I have put several on 6 meters and I'm short one cable.   I only need 4 channels in my area, and for testing it would be great.  Thanks, Jeff, N9OFB