Go here:
http://www.svapowerproducts.com/
Ray is a great guy to talk to, excellent customer service and the products not to shabby either.
Tell him Bob from Casual Restorations sent you.
I got tired of playing the battery charger shuffle with my race car and bit the bullet on a his CS120 alternator (approx. 130 output). He reworks them, it puts out almost 100A at idle!!!!
Also got a "thunder series" 160A for a Nitrous car.
I have tried to overload it with dual fans, electric pump, MSD,full running lights, high beams,brake lights, line lock, trans brake etc etc, it never flinches.
Here is a shot I took, showing some guys on another forum how to wire it.
Made running at night safer, I make the run (10 flat) with my high beams on now.