I've heard it argued over and over again on this site, but i was wondering If it's a catastrophic ordeal if i throw a gasser's 108Amp alt. on my 6.2? I hear that 6.2's need an alt that charges on idle blah blah blah... just trying to fix an electrical bug and the the alt. is the only culprit left and it has been on the frits for a year now. Pulsating current while driving, 12-18 volts, cutting power when it gets to 18, you can even notice an effect with the engine because the IP is affected by the voltage drop and it runs like it's got a mild cam lope to it but its perfectly in sync. with the voltage rising and dropping. The biggest problem though is just the headlights, when you turn them on with the truck running, it boggs down, everything dims really bad, give it some RPM and everything brightens up but it starts tach'ing out the volt gauge and drops all voltage @ 18v. Any help or ideas would be great guys, thanks in advance! Happy thanksgiving!