I have an mcx 270 turbo kit off of a sled I used for parts. The sled had a bend in the bulkhead, so I pulled the motor and put the turbo kit parts on the shelf. I would be willing to let the turbo kit parts go for relatively cheap to someone who can build their own sled and source any miscellaneous bits. I have all the important stuff.
MCX has worked well in all models of yamaha's. they have always been a turn key and go kinda kit.
My buddy down here in cranbrook is going to be selling his. he hasn't had any issue with it.