So, Red Line Land Cruisers just announced a turn-key $49k 4 Door FJ-40 vehicle.
Basically, they take an Aqualu Body, a donor 80-series, and build a sweet 4 door 40, for less than the $100k+ FJ-44 from Icon. To me, getting it under $50 for a 'brand new' 40 is key.
If you want do build it...