Thanks Mr Psycopath - I have emailed them, they confirmed they make MC18 pipes, the issue is will they fit or can they be fitted to the MC16. If so I will be getting a pair.

I had an MC18 frame that 'came with' an engine I bought, it 'looked' the same as the 16.....

So I'm hoping to try 18 pipes for fit, of I might just bite the bullet and get tyga MC18 pipes, and make them fit...

Cheers, Mat.