Allen, I wasn't trying to say the tanks were the same, or were interchangeable, sorry for the misunderstanding, I were referring to size and shape as he has a 97 Ranger and could have a look at that before getting the X. About the only things the Ranger and X tanks have in common are the material they are made of, but at a glance they look similar, width and length, I don't know about height, and haven't checked capacity.
Thank you for the info about the pump on the 89 B2, I did not realize it was of the high pressure variety. Except for the expense of the new pump, that would be a drop in replacement that will eliminate the rail mounted pump. I also see they are rated at 100-110 psi, rather than the 80-100 psi of the X pump.
Ray