jugs are usually pretty easy to find and dirt cheap, depending on the bike. my cr always got a bored out jug when i did a rebuild. i was not at all nice to my bike though, race gas and running the fuck out of it for a million hours. mj usa on cleveland avenue is where i always went to get top end kits and have the boring done. assembly is easy too, like others have said, should take about an hour or two tops.