Gonna be switching to a one wire alternator, stock one is toast, and it will clean things up.

How many amps output do I need? Car currently has:
Electric waterpump (mezeirre, not sure of draw)
mark viii fan (40 amps draw, or so I read)
Msd 6AL, MSD blaster coil, and pro billet distributor
Been swapped to carb (so no more computer stuff)
Aftermarket stereo, eventually with a small amp and a couple subs (nothing earth shaking)
Full headlights etc (its a street car)

is 100 amp enough? or do I need more?

Thanks everyone

Been considering this one if I need more than 100 amps. I am on a budget. Got a three month old at home and the wife is out of work.
http://cgi.ebay.com/ebaymotors/Ford-...item1c1c5eeeae

 

I think a 100 amp should be sufficient as long as you put a capacitor with your amp. thats what ive got, and i get plenty of power. i got 2 electric fans, 255LPH fuel pump, msd 6al, msd blaster, and msd distributor along with aftermarket stereo. if you plan on putting any more stress on the alt in the future, i would go ahead and get a 130. cant hurt to be prepared