You have a 3 wire starter on that truck? I think there should. Does the truck crank slower when ya try to start it now. Sometimes getting less then 12 volts during start up will be a problem with the 3rd wire not connected to the starter solenoid.
When your truck is running, tap that ballast and see if that thing is hot, if it is, it's doing it's job I hope and saving your ignition system. Careful though they can scorch you good. They keep the voltage in check.
Sometimes you should make one change at a time also with ignition mods. Making a series of changes can get confusing.
You say you connected it up by the book, have you tried calling the company you purchases it from. These places usually have great techs to help you fix your issues. You need to be careful with those systems cause the weakest link is always the most expensive and that's the darn modules. Spark should be stronger, yes. It allows you to run a wider spark plug gap for a more efficient fuel burn. That's what those those things do. Though going to wide starts working against the performance and you may develop misses.

Tell us about the coil you purchased. What resistance is it and stuff. This will tell you if you need a ballast riding on top of it. Plug in some numbers here so we know what kind of voltage your throwing into your dizzy.

I would call tech support though, It's their hardware and they know best how their stuff works and they can help you trouble shoot your problem. If they won't help you, return the stuff.