The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 79' K20 with 1-Ton rear brakes from factory??

Blue hauler · 09-22-2023, 08:21 AM

Not sure what the SPID is. Is that the option sheet in glove box? I don’t have that.

09-22-2023, 08:21 AM	#3
Blue hauler Registered User Join Date: Feb 2015 Location: Osceola, WI Posts: 15	Re: 79' K20 with 1-Ton rear brakes from factory?? Not sure what the SPID is. Is that the option sheet in glove box? I don’t have that.