i wouldn't worry about it. your question was germaine to the op, so i see nothing wrong with what you posted. matter of fact, it wasn't even the op (or a mod) who jumped you. i just didn't have any info to offer you.

 

Paragragh 1 in Jamies posted link is spot on. Reversion in large baffle mufflers kill TQ and are harder to get a good tune. DK's tti's are like an old school lollipop used for the same reason. I thought I would get a good bump in tq and hp after installing TW21'S, Dresser duals on my 88. That didn't happen much until I went to Crusher Mellows (no longer made) and retuned which resolved the reversion issue. The mellows made all the difference in the world.

One can chase a particular exhaust tone by replacing the slip ons, and in effect lower performance

 

I was being a smartazz and having a little fun.

Slip ons with stock headers really don't matter one bit. Pick what you like/sounds good to you. Now if you have a good aftermarket header, your slip on does matter.

 

I was listening to clips on YouTube an I liked the Bassanni an S&S for sound.