Has anyone done or know how to do this swap, in terms of what is needed etc?

I am talking about the vents under the center front armrest which are for the rear passengers.

Thanks

Bumping for interest.

In my TJ there are rear vents under the front seats. The ducting for this (appears to be) branching out under the center console. With a bit of luck you can just replace this section of ducting and the center console body (the actual part that has the vents in it) and any associated brackets and covers.

I don't know if series 1 TJ's had any rear venting at all, making me thing this model might be the easiest to make this mod to?

Comparing the two factory manuals - TJ and TL/TW - could shed more light on this.

I have done it, to do it properly the face of the airbox needs to be changed over to the TL set up to allow the vents to connect

Is a dash out job, a couple items on the airbox need to be moved to allow the face to be screwed on, is just really a different duct on the box to allow the rear vent pipes to connect