VIN to SPID

[Nicholasleu]

Hello out there. It has been awhile since i have been on this sight and i recently began restoring a 1969 k10. From what I can tell and the research that I have done on the frame and drivetrain are original to the truck. However, the cab I do not think is original well at least the glove box because the VIN was scratched out and from what I could see it contained a C instead of a K in the VIN which got me wondering. Is there any way to find a SPID without having the original build sheet or glove box when you have the VIN? I have heard that when you call GM they will give you a restorers SPID packet but that contains all options available for a given year and is not specific to your VIN. Any help would be greatly appreciated. Thanks