Hey, PM, just saw your message and may (or may not) have some useful info. I've just installed a 2-1 Bassani B4 on my '12 Street Glide CVO, so I can give my general impressions.
I heard Bassanis had a bluing problem. Talked to the Bassani rep (Kurt?), who said there was a batch of pipes years ago that were poorly chromed, and had lots of issues. Bassani now uses a different outfit to chrome their pipes, and haven't had any problems recently (of course he'd say that), but once bad news gets out, it's had to shake that reputation. I love the look and sound of my B4, very different than anything out there. That's why I choose them - they're relatively unique, which is important to me.
Installation was pretty easy, they fit well, but the section of the heat shield where the pipes join doesn't fit well. There's a quarter inch gap where the heat shields aren't flush. There was also some glue or tape (it's definitely NOT boot burn, and I cleaned them very carefully before riding) on one of the heat shields I didn't see before I rode it for the first time. It blackened the shield, and I've not been able to get it off. The chrome now is pretty scratched up at that spot, so I'll need to find some good chrome restorer after I figure out how to clean it up.
Again, I love the look and sound of the pipes, and it feels like the bike pulls much harder now. But due to the poor fitment of the heat shields and the mysterious burned substance on the shields, I can't recommend the Bassanis whole heartedly. I realize your question is about the Convertible, but I am not convinced Bassani has its quality control issues solved.
Good luck with your decision! Hope this helps a little.