It is not really anymore more difficult to wire a monsoon to a V8 than any other engine. However if you have little experience with wiring you may find it tough and will need some patience. Obviously the Terminator X would be easier since it is designed specifically for the US V8 market and comes with a fully plug and play loom.
Note the Monsoon wont be able to control a GM stepper motor idle valve. I assume it is a cable throttle engine?
I can probably knock up a basic wiring diagram if it helps. I suggest you start by having a read of the wiring information section in the PC Link help file however.