Looking at a 59 FJ 25. No motor or Tranny. OEM rear end. Basically a frame and body with some rust in the floor. The truck has duel fuel tanks on the floor? Whats it worth??
Don't mind this type of stuff in the regular section, so I moved you.
If you gave us a picture we could give you a better idea. By the sound of it, you probably wouldn't have enough to go back original. Dual fuel tanks were cobbled in by someone.
If you just want the look of a 25, all you need is the bib, T-bird emblem and a good solid tub. Put whatever drivetrain you like in it. Don't pay any more than you would for a 40 in the same condition. Also keep in mind you will have to make some stuff, even if you're not keeping it original.