Thanks for the warm welcome guys, a bit of history on my CB650 Nighthawk, made in 1982, as I understand it, only made for 1 year and the last of the SOHC units for this model, imported to the UK about the mid 90's and bought by me in August 2010.
Needs a little tidying up in places which I hope to get round to when there's some spare cash to spend on it, just rebuilt the front calipers and MC, only drama was a seized bleed nipple that sheared off when I tried to undo it, a mate of mine is going to try and extract it some time soon so at the moment I'm running a single disc front end, which seems perfectly ok, stops just fine, this is not a surprise to me as some of the other custom models of the time only ran a single disc as standard.
The exhaust is a Marshal 4-1 that was on it when I bought it.
Hopefully the picture will accompany this post, looking forward to swapping ideas and hearing everyone's stories about their rides