There are no kits. You just have to get what you need and have the machine work done by a shop. OR- you can do as I have with other engines, sent it to nFlow and have them re-manufacture it to better then factory specs and get a warranty to boot. You do the R&R. What I like about them is they have the same standard as we did 40 years ago with Honda-"No machine leaves the shop until it's right". If I had all the tools and equipment available to me today as I did back then...I still would probably have nFlow do my engines.