cost is roughly 600-900, check the Yella Terra sponsors section, they supply and fit them for you. this would be the best since your not too mechanically minded, but this is the time now to learn, if you have mates that are so inclined, get them to heap you. all it involves is removing the rocker covers, unbolting the rockers and removing them, the guide plate, and push rods, and replacing them in the same order with oil. torque up the bolts whack on the covers and away you go.