Ignition coil overheating
Which model of Pro-comp distributor do you have? Has the wiring from the truck been upgraded? Are you using the Blaster SS coil MSD-8207? If so the primary resistance is not enough. You should be using a Blaster High Vibration MSD-8222 or any of the Blaster 2 coils that have a primary resistance of 0.700. The MSD-8222 is epoxy filled like the one you have. The Blaster 2 coils are oil filled.