mines a 17 SLR. Exhaust only has one year so its the newer ones (i assume). Here is a pic
Yes it is a newer version. No trans mount swap needed for you. THAT'S a BONUS!! If you get it all snugged up and find issues rubbing the rear tire, I'll link you to the fix. It is rare you will need it having a newer version. Good luck.
I found with the 2" exhaust that I loved the sound without baffles installed for short around town runs and car meets. But for 5+ hour distance runs, I chopped the baffles down to one inch and that was the trick. Reduced the sound by 20% and made it bearable. I never got an exhaust drone with either configuration.
For the record, my setup was cat-less and that is significantly louder that a WP dual rear with cat in line.
The version in your picture would retain the cat if I am not mistaken. If you attempt to punch out your cat in the garage... please note it is not a simple task. The guts are made of titanium and is tough to get freed from the walls.