all i can say is i am very happy with my Lanzar opti amp.
i would say go with a 50x4 would be just fine. but you could go with a 75x4, just don't turn gain up as far.
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72 442 "THE BEAST", 99 Alero - OSV Replica w/ original OSV parts, HURST Dual/Gate Shifter
Beware of the BackStabber

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