Sorry mate, if you look back in previous posts there is a video of Dean and his R3 exhaust muffler that is designed for installation on a stock header system at a very reasonable price, just a suggestion you might look at.
I've heard a lot of different Rockets with a lot of different exhausts and have to say I like my TORS with Staintune crossover. I'm not enjoying the benefits from having a free flowing header like CES, Jardines etc.... but I just like the sound of my TORs. Not just saying that because that's what I have on my bike.... it's just that perfect deep tone that I like very much.
No special tune other than the TORs tune from @HansO.
Tis MUCH easier and less expensive to build your own!
At the time I was using a PCV + AT and had NO issues with performance and the single can really sounded GREAT!
FYI - The connector pipe is 1¾" ID inlet and 8¾" long with a 2" joggle. The can is 14¼" long overall with a 3½" outlet. The muffler body is 5" dia by 11¼". DC Sports® EX-5023 - Anodized Bullet Stainless Steel Round Muffler
Here is a pix of my beat up can with the mounting pipe I fabbed:
I bought some mufflers for one of the Harleys I had a few years ago from the USA & I think the shipping was about $100USD.
How much did you want for the TORs?