I just picked up a scrambler exhaust for my 1974 cb450. It's from the scrambler of the same year. I would like to make it into a 2-1 exhaust. I was planning on just picking up a Y-adapter and working from there. So I've got a few questions.
1. I would like to know what size diameter the single exit diameter of the Y should be, if that makes any difference at all?
2. Muffler recommendations?
3. Online vendor recommendations to purchase 2-1 Y-adapter.
Here's an example of what I would like to do with the exhaust, but most likely a different style exhaust.