You ain't gonna like this suggestion but I know they work, the Powermaster 140 Amp alternator 8-57529 from Summit for like 250.00. I had one on my car, running a BG400 pump (with a step down box) Two Spal PUSHER FANS (with a custom shroud) a MSD Digital 6 box and a CSR waterpump. The lights never went dim at stop lights and the batteries stayed charged and the engine ran cool (for a Mopar) once I got my Jetting and Timing correct. I also used a 8 gauge cable to feed the batteries in the trunk, had relay on the headlights, fans and fuel pump and fantastic 1 or 2 gauge ground wires. Here is the alternator in Black...