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Old 10-28-2020, 01:45 AM   #8
gmc684x4
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Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
Re: Stuttering Stanley

M&h and American auto wire makes good upgrade factory style harness for 67 72 trucks they both have engine harness which can include hei update wiring built in the headlight harness can include upgrade to Si style altenator

I am taking it a step newer on the altenator to cs130 and cs144 altenators which give more power output at idle
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