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54blackhornet · 05-21-2018, 03:46 PM

I’ve noticed some core supports are pre drilled for the dual horns others not, I located a set of duals with jumper but my gmc core is not drilled for the second horn.

05-21-2018, 03:46 PM	#6
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,258	Re: High Low Horn question I’ve noticed some core supports are pre drilled for the dual horns others not, I located a set of duals with jumper but my gmc core is not drilled for the second horn. __________________ 71 C-20 07 Magnum RT AWD