I have a good one for y'all!!!!!

[Mtn_man]

Okay so I recently purchased a 78 gmc Sierra for $500. This truck is weird! Every thing checks out on vin, truck originally had a 5.7 120 diesel (now just a 350), it's a stepside bed truck, hydroboost brakes, steps on bed looks like they had smoke stacks on it, heavy duty leafs, stock radio with built in CB, cab visor on front, fin on back, western turbine wheels, shag carpet up to the headliner! Air horn on top. This is what I though was really weird, truck has dual tanks, but only a gas spout on the passenger side, back of cab and front of bed is the factory yellow color. how does that happen? Was this truck a rare option not including the accessories ofcourse someone put on. Thanks!!