Just screw two of the Toyota's together.... Same fittings.
You only need to extend the two (front & rear) that go between the body and the axles.
The Raybestos BH38009 is 22" long (5" longer than stock), but I am having trouble sourcing them. They are ~$13 each.
Rocky
X2. For BBQBoy Parks Auto Parts on Rivers has these in stock for around $14. They also have a lot of other weird FJ40 parts in stock if you need something ASAP.