Your truck is the only '68 I have ever seen that does not have the inside of the cab painted the same as the body color (?) Interior color uses the contrasting light green that '67s do. Your VIN shows a very early production truck. Someone who knows these trucks better than now I may be able to comment on that. Super nice, well optioned original truck, I wouldn't change a thing other than the seat and disc brakes, Drive and enjoy
Steve weim55 Colorado