Barracuda not starting after being parked for five years

When the ECU craps out, I personally like AC Delco ignition module heat sink part number 10474610 in place of the factory ballast resistor. Outfit it with a Davis Unified Ignition 000222 4 pin Dyna Mod (American Made and highest review rating) with an MSD Blaster, Mallory Pro Master 29440, or any coil with 0.9 or less primary resistance to eliminate the need for a ballast resistor. Schematics are available online, on one side of the module run original hot wire from ignition power with the other one to coil and the two pins on the other side are for distributor trigger. No ballast required and very neat and clean installation with some 3/16 and 1/8 inch wire loom. If you already have the coil, it’s less than $100 at Summit racing. If a module goes down while on the road, the nearest parts store will almost always have a four pin GM HEI in stock, you can even keep a spare foreign made one in a static protectant bag in the glovebox...