[Gearhead999]

Fuel tank replacement isn't a big deal.

Run tank low on fuel or empty. [makes tank more managable weight wise]
Disconnect the fuel line and the gauge wire at the sender.
Pull the inside trunk mat out.
Disconnect the filler pipe and hose and remove.
Remove screws holding tank to trunk floor.
Lift tank out.
Reverse above for install.

As far as the sender goes...Sure the Ford one is better. But, it isn't a big deal to replace the sender, if it goes bad, later.

One comment I do have. Take couple minutes and replace the two rubber fuel lines while you're under there. One at the sender and the other on the line up forward around where the door meets the fender. Cheap insurance.