ques. 1985 c10 with a 90's stepside bed????

[bguild]

So here is the deal. I have a 67 truck with a 90s z71 stepside bed.. I am trying to sell it. A guy called saying he wants to put it on his 1985 chevy and he has seen it done.. He had a few questions. Mainly about mounting and the gas tank since it sits outside the frame. I told him I would try to find out and get back with him.. i think his tank sits on the right side and mine is on the left.. Do you guys have pictures or know the answers to these questions. I am hoping to figure this out for him so I can sell him the bed. it would help me out so thanks in advance.