rebuilding an engine isnt that hard. Ive rebuilt/help rebuild 7 engines and Im 19. 4 of these engines came from Japan and 2 of them were JDM(Japanese Domestic Market) not that makes a difference but still. As long a you have a very good shop manual not one of those crappy haynes ones Im talking the Helms manuals then it should go smoothly given you have all the tools. Couple tips have a lot of plastic baggies and a good sharpie because you will want to keep up with everything. Few things are better than having an engine start up after you rebuilt it yourself.