Hi Gregg, sounds like it was pretty straightforward. Does the module work with the fly by wire pedal or throttle body actuator or something like that? Can you get them for later model eg LS2? A quick google led to this thread on the Factory Five forum which suggests you need a BCM.
Wiring for Cruise Control for LS2/3/7 - FFCars.com - Factory Five Racing Discussion Forum
On another forum I found a more technical discussion but no solution it would appear.
Cruise Control for LS2 DBW - LS1TECH