I did the injector hot swap program from Kerma , they sent me the injector puller tool ,metalnerd tool for triangle safety bolt on IP and my new 764's nozzles mounted to injectors all calibrated and ready to go. . I did find a new plug end in the box that needed to be swapped out with the OEM one in the car for the 3rd injector wire. . Kerma had the 764's on sale for $249.00 . .I coluldnt pass them up .