Thanks in advance.

Details
Just purchased a black 2004 Heritage with Vance and Hines big/long shots installed, they are nice and I understand they are higher end but not exactly my style. Very loud, and I would prefer some black pipes. I removed bags, but will install for longer trips.
I found the Patriot defender shorts on Ebay for $199, I really like this exhaust and have seen/heard them on other bikes. Will coat heat shields black.

Question(s)
Will I notice a difference powerwise? Positive or negative?
Will I have to retune, bike came with tuner? How imperative?
Will these shorter pipes be and issue when bags are installed?

Thanks again for any help/opinions

 

A 2 into 1 like that will always make more power across the board than a set of "designed for looks" pipes like Big Shots. My wife has a 2001 Fat Boy that had V&H Short Shots before getting the Patriot and she immediately noticed the power increase. She also has a set of Heritage bags for it and has no problem with heat at the bags.
She already had a TFi tuner and we didn't do any adjustments for the pipe change and it runs great.
She really loves this pipe.