Indeed Lester Alloys, the one part that shows if someone has a genuine T140D for sale and not one modded to look like one is the heads. The heads of the D Special have screw in collars not pinched clamps. As a side I believe the exhaust was always a 2 into 1 and it had mini apes for the USA market where is was intended.
I've a mad story goes with that purchase, rode the bike with a full tank of fuel from Leicester to Plymouth don't believe I stopped off anywhere to re-fuel. Weather coming past Exeter was drizzly foggy conditions and it was early evening so dark not sure what time of year. For some reason approaching Haldon Hill I wondered why I hadn't seen a single car come past me for ages. Bike had a rack and top box and bolted behind the top box a Maltese Cross tail light coupled with the original below. Headlight had a visor which seemed to keep the beam down.
I glanced behind to notice a very very long queue of cars all with shitty headlights like they had in the late 80's following the bonnie. All afraid to over take as they couldn't see where the fuck they were going, was leading this massive long procession, thems was the days