I found an EVIC from an '07 W/TPMS p/n 56010520AE, and am trying to get it to work on an '06.
Has anyone done this? I'm thinking I need to switch the valve stems and the wheel well transponders
I can't find pictures or part numbers of the wheel well transponders.
Thanks for any replies

You might also try a post over on the KJ CRD section as there has been a bit of chat about this in the past. While I'm no expert you do need to consider several things:
1. does your 07 have and no EVIC or a "dumber" EVIC or a "smart" (e.g. full function) EVIC- if the 1st your low pressure warning is just a light in the dash; if the 2-3nd the warning can range from just an EVIC warning (dumb) to the ability to read pressure (smart) for the 4 tires on the ground with a warning display if spare is low.
2. double check but I assume the N. American KJs with TPMS all use the same radio frequency while export ones use a different frequency. Take home you need to know if the EVIC you are trying to use has the same frequency as your current wheel sensors.
3. As far as I know TPMS was fitted on most but perhaps not all 04-07 KJs in the N. American market. If you have wheel sensors in each wheel, e.g. all 5, then you already have the needed wheel sensors and receivers. If not you need to build a TMPS system from scratch.
4. taking all of the above into consideration I suspect you may have to get someone with access to the appropriate DCJ programming tool or its equivalent to "tell" the new EVIC to work with the 06 sensor setup.

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Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs