Re: 87 Chevy Crew Cab 4x4 Converion/Cummins swap
I believe that I drilled out around the outer edge and then used a die grinder to clean it up. Here is a picture.
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1987 GMC R2500 SC 454 T400
1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors
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