Want more power? National Quick Start has got just the thing for those of you who are running an ’87-’94 Delco-Remy CS-130 GM alternator. GM rated these alternators at 85-105 amps depending on the application. Now for about $100 you can upgrade your original alternator to 140 amps of battery charging power with National Quick Start’s Iceberg upgrade kit. We found a junkyard core with a good rotor and voltage regulator and rebuilt the alternator on our workbench for about the same price we would have paid for a rebuilt 105-amp unit from the parts store. We’ll never buy one of those rebuilt units again now that all the voodoo that once surrounded these little powerplants has been brushed away. Our core was from a ’90 diesel K3500 that was originally rated at 100 amps. With the Iceberg kit installed, the same alternator put out a peak of 138 amps at 14.6 volts when loaded down with our ARBST test equipment.