Re: big alternators = big price?
I have extensive current hungry devices in my truck, a 89 FS 351W Bronco: 3 stereo amps about 1500 watts total, tv/vcr, fog lights, Dick Cepek 150w off road lights, CB,ect...
I solved the problem with an AmpTech alt. it's about 140 amps. Thats double the factory alt. It cost about 200 bucks and went in with only a little modification to a tube that comes off of the engine that runs behind the alt. This alt is a little bigger than the factory one. If you think your gonna need more power you could go with a Leece/Neville (not sure about the spelling), this is the alt used in Ford ambulances. Your gonna have to fabricate a mouting bracket, buy a longer belt cause its huge and the only way to mount it is to move it away from it's original location. It costs about 300 bucks.
I'd save the money and the headache and go with an AmpTech alt.