Side mounted gas Tanks

[65Custom]

I have searched the forum and I have not found any post on side mounted gas tanks? SO wondering if anyone has managed to mount a saddle type tank on 64-66 C10?

I have looked at the 73 -87 tanks and they look like they might work but wondering if anyone has done it

I am planning on putting in a tank between the frame rails in the rear, but I also do not want to get rid of the gas filler in the side of the cab. I would like to keep it if possible. so wondered if anyone put in a side mounted tank?

I was thinking that maybe I could run the cab mounted filler to it through the floor and have an additional fuel tank and keep the original look.