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Originally Posted by 91S10
the pulley only adds 20 hp and same with the spacer plus the exhaust. would 40-50 really tear it apart
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You need to dip into reality a bit.....
under drive pulleys will add 3-5hp MAX
TB spacer will actually reduce performance and does nothing for a 4,3L so don't install it.
Exhaust might add 5hp max.