I looked at the gearboxes.
There is actually no rear gearbox. The axles come straight out of the transmission. It has a breather which goes up just under the bed, and opens out a few inches below where the intake is.
The front diff has a similar tube which goes up under the front storage box, which is again a few inches below where the intake level is.
You could buy some longer pieces of clear vinyl tubing and run those breathers anywhere you wanted to - even up the roll cage if you felt like it.
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