Not hard at all really. I personally think that you should wait to get cams first unless you are not getting cams. It would save you from doing the cam gear install twice. I'd say that the cam gear install would take you no longer than 2-3 hours. If you have automotive skills, maybe 1-1.5 hours. Do a search on cam gears and cams. Just remember to pull the cam gear cover off when the engine is warm unless you are not planning on putting it back on.