Thanks a lot for the Photos which will definitely be of help to me.
Sorry i took so long to reply.....got bogged down in another project. Now i have actually taken delivery of the bike in question. It came with the low level exhaust which was in need of replacement so i chose a hi-Level one. When i tried to fit it it didn't! The exhaust stub at the Head has 38 mm (1 - 1/2") whereas the exhaust pipe has an inner diameter of 41 mm.
I tell myself that the manufacture perhaps needs a fatter pipe to make the necessary curves - still i am a little concerned, that i might have a head from 3H or something on the bike, so it would be great to hear from you or any other T80 owner who could confirm the outer diameter of the exhaust stub for me.
Thanks