I could be mistaken, but I was under the impression that unlike the standard edition planes wich are open and can be tweaked and adjusted to a modder’s content, the PD planes were locked down and only very minute changes are even possible.
Parts of it may be moddable. Like the WT G3000 Enhancement works like a charm with the Longitude. It’s hard to go back to the stock Garmin units once you’ve used the WT mods. But not sure how much can be done to it by 3rd parties.