I am going to be getting 2 super 44 mufflers for my 05 ss supercharged when i get the mounted I'm having the shop replace my y pipe with 2 1/2 inch pipe because i want my exhaust form the cat back to be 2 1/2 but i wanted to know which super 44 to get one with an off set like this Amazon.com: Flowmaster 942546 Super 44 Muffler - 2.50 Offset IN / 2.50 Center OUT - Aggressive Sound: Automotive

or should i get on with both openings in the middle

and should i get tips or leave as is