Pete? They all run a bit lower than mine. What Morris has is the production headers and muffler. Mine was the first made and was what I wanted all the others are inferior copies.

All the production headers have the O2 sensor in the same place as the standard headers. Mine has it inside so you can't see it. The pipe ends in the same place as the original headers to make it simple to run other Triumph mufflers. Mine does not. The production muffler has an S bend before it to line up. Mine does not. The production muffler now has a 2-1/4 inch baffle. Mine has 2-1/4 reduced to 2 inch. The 2-1/4 baffle appears to make about 5hp and 5ft-pd more than mine. I don't know what more I can tell you? Just buy it. If you want something different you will have to organize that with Trevor at CES. I'm sure he'll do whatever you want if your paying and you know what you want and make it clear. It's a bit hard to do custom work for someone on the other side of this place.