Yes it has a two into one exhaust. I can't remember the name of the brand off the top of my head, but I do remember it says made in England on it somewhere. It sounds great, though I've never heard a standard one.
Pinch of salt because I don't
really know what I'm talking about but your carb jetting might be slightly off for that exhaust so that could be worth investigating for your odd running area.
The standards like yours came with a 2 - 2 exhaust and the special (budget
) version came with a 2 - 1 to cut costs and I think they were jetted differently to cope so could be worth looking into.
Mine is a special that I'm restoring so it's getting a lot of standard parts. I'm trying to tot up all the little differences like that but I'm still in the middle of it all.
Agreed, on someone else's bike that bird is kind of cool. I don't think I have the self confidence to actually ride that myself though. Makes a difference if you're the one to actually paint the thing too. You should get a printout of that bird photo and keep it under the seat with you. When you get compliments on your repaint you can be like 'Yeah check out the
before!'