WHAT SIZE ALT WILL I NEED???

[pcchris]

I have 4 2600watt amps

if i get 4 kenetic 2400's

what size alt would i need to power these amps and recharge these batts

and what company has them for cheap

also can anyone machine or know where i can get alt brackets for the low in case i need 2 alts

the car is a 2002 chevrolet suburban