To answer both your questions:
Tony412k You're welcome. There was no air assist to my Pilot C, so I can't say about the air assist. The parts should be compatible between Pilot/Dart/XC28 as mentioned previously. If you want to make sure, check the parts catalogs of every year and compare the part numbers and check compatibility (Pilot/Judy to Dart and Dart to XC28).
Kapusta I haven't looked into the 32mm models in details, I only looked into the Pilot and Judy forks by comparing the parts catalogs of every year for those specific models.