If you want to keep that gas tank idea Toyota, the FJ60's have a tank very similar to that.

I guess my only problem with it would be that is harder to get my hands on an FJ60 tank than an f-150's. It would deffinatly cure the sending unit problem, but reading E as F and vice-versa isn't that big of a deal. There is also the option of fabbing the mount for the Toy unit... so many options, I am going to take my time before tackling this (code for: my woman is pissed about me spending more money on the rig).

But good info man, I will be looking into it