I am a Mechanic by no means. I consider myself a good part swapper. This was medium difficulty project because of its location on the engine. The new Intake Horn has slotted holes on the bottom two bolts that helped with the installation tremendously. This allowed you to start the two bottom bolts while the horn was not in place and then only have to tighten them down. The horn itself is constructed very cleanly and heavy duty. I have not put enough miles on it to determine the increase in performance but plan to pull my camper this weekend when it will be very apparent.