help needed bad ASAP!

"I want to go start it to move it nothing at the key will not even crank. It would not even fire by jumping the start relay."

It wont crank or wont fire from starter relay?

"Replace the ignition control module it fired but was only firing on 4 cylinders. Put in a brand new ignition control module and a fired on all 8 but blew it out with in 5 minutes. Still no cranking from turning the key, I have to jump the start relay. We tried 2 different neutral safety switches with the same result."

What ignition are you using? Is the ign module properly grounded? do you have the proper ballast resistor with proper ohm rating? have you tried cranking with key in neutral? do you have power to the starter relay stinger wire while cranking?