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Chevy/GMC Trucks \  AMPERAGE ON ALTERNATORS?

AMPERAGE ON ALTERNATORS?

Chevy/GMC Trucks Make Specific
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89s dime   +1y
i need to get a new alternator, i have an optima red top and runnin two viair 450's, and soon a system, what amperage is best to get...is 200amps overkill?
89s dime   +1y
what are u guys runnin?
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