@brian said it best...
You have a TON of expenses and labor ahead of you, trying to bring this one back...
It sounds like you
may have a working engine/drivetrain and maybe some other major parts,
like the Oil bottle, all for the price of some firewood delivered.
You also have very admirable skills and the energy and can-do attitude of the young.
If you decide to pursue bringing this one back, I think you will learn a LOT... But, I also think you will quickly become frustrated with just how expensive it is to try to return rust to metal.
I think the main lesson you would learn is that you put your energies and money into the wrong FJ40.
You said you have very little funds... Rather than try to resuscitate this one, why not part it out? Compression test the engine and see if you can make some money selling the engine, tranny, tcase, axles, gauges, etc.
Accumulate some funds... Contact your Indiana IH8MUD clubhouse
IN- Hoosier Cruisers and have some experienced MUDders talk you down...
Maybe they can help you find a good starting point... Perhaps with a more viable opportunity.
I don't want to destroy your dream... Just trying to help ensure it comes to fruition.
Regardless, all the best ... I hope you are able to drive your 40 (a better example) before your enthusiasm wanes.