Ready to Kill this square

[Nukes16]

I drive my truck to a buddies to help him move after work (on a friday) and then the giant sack of crap won't start. It would turn over but wouldn't fire! I get another buddy to drive me home to get my tools and grab a distributor cap, rotor, and coil off of one of my parts trucks. I drive all the way back out to my truck (about 30 miles) with the tools, parts, lights etc (because it's dark now) only to replace everything 2 or three times, trying every, coil/cap/rotor combination that I had. Finally I have to call a tow truck and have this terd towed home for a mere $138.40. On the way home I stop and but a new coil, cap and rotor and replace those again when I get home.... and wouldn't you know it.... still no spark. It's now 2 in the morning and it's still not running. How can it be running fine one minute and not getting a spark the next?
Anyone have a suggestion, or should I blow this thing up?
Thanks for your help