Yes I get all my swingers and chassi's from wayne at wild west welding, good price and good swinger. I have his number I will have to find it and post it for you. The axle I think you can get from jim from passion racing.
its a cub. they dont need bored unless you really mess it up. its nikisil. biggest you could bore a 68mm cub would be I think 69mm and that is pushin it.