I know this sounds dumb, But my truck is in a remote location and I need some dimensions right now for an accessory. Anyone out there with a 83 Full size... I need to know the width of the roof.. The length from back of the truck to the windshield.. and the length of the cap. PLEASE if anyone out there has some time to kill.. Help me out :-) I've looked everywhere online, even at brochures for the 83.. I cant seem to find this information anywhere.