The search function on the RH sidebar is very useful when looking for answers to questions like this =>
Here are a few posts regarding aftermarket leather:
post5347489.html
This one has photos of a Classic Soft Trim (a.k.a. Roadwire) or Katzkin Leather interior. I'm not sure which.
post5133933.html#p5133933
Quality products properly installed by trained technicians will make all the difference. Adding leather seat covers
is not a DIY job!
Re. Aftermarket Mufflers:
There is no aftermarket muffler kit for the Rogue. It would have to be custom fabricated. So far, none of our members have tried it. I would suggest looking to see what the Sentra SE-R and Altima 2.5 owners have done. One of the bigger issues with a Rogue exhaust is the sideways mounted muffler... it really limits your muffler selection.
Another simpler mod is to swap the Rogue KROM edition rear bumper with center exhaust like Native2PS did:
convert-to-krom-t481265-40.html?#p5638415
Gives you all the all the look using OEM pieces, but drives/sounds like a normal Rogue.