Otr supply the kit with two sets of bolts. Short so you can remove all the AIS bits and long so you can slip the blanking plate in and keep everything looking stock but still be blanked off. So the didn't have to remove those parts but I guess they chose to.
I would be checking to make sure they have also blanked the air feed to the solenoid from the air box as I removed the lot when I did mine.
Matt.