I recently purchased the same truck but with a single rear axle (photos attached). I'm wondering if anyone knows what the 91000 designation means? The only GMC references I can find from that year list a 9100, not a 91000, is this the same truck / specs?
Does anyone know if it's possible to get replacement drivetrain parts, ie brakes? I'm planning to restore the truck and will need to source some parts for it somehow.
