As purchased, my Cup replica had a 3" exhaust (straight pipe as it is a track-only car).  It is LOUD.  Very.  Loud.  Had to take it down a notch...

One of my goals is to move it back to the street, and that will take some pulling it back from the edge of full-race mode.  Eventually, a high-flow catalytic converter, lightweight carpet, among a massive laundry list of items will help bring this back to be (somewhat) comfortable on the street.  Think more GT3...  think 944 Turbo Cup "reimagined". 

I am already around very loud noises all day, every day.  To tone her down a bit, I researched, researched, and researched mufflers for the Cup which would not completely kill the deep sound or end up sounding like a Civic.  I reached back to my college days, where one of my close friends built his LT1 Camaro into a monster, and opted for Spintech.  I have watched Spintech over the years grow into quite a successful exhaust company (subsidiary of a larger metalworks company).  I decided to finally (after first finding them in 2003, FOURTEEN YEARS AGO) go with Spintech!

I just received my new Sportsman 3000XL in the mail.  I had to remove about 3 inches of the exhaust pipe towards the rear, but other than that the install was pretty easy.  The exhaust was fitted together with heavy torque clamps. but I still managed to break one lose.  One replacement on the way.

Here is a video of the Spintech Sportsman 3000XL on the 2.5L 944 Turbo Cup.  As always, cell phone video sound is not the best representation of actual sound, but it's pretty good.

After much deliberation, I decided to give the comparatively inexpensive Bimarco FIA racing seats a shot for the Cup car.  I am still waiting on my seat brackets and possibly sliders from Wedge Brackets, however, I wanted to post a picture of the seat.  I went with one seat for now, to check the quality/build/comfort/value of the seat before purchasing the passenger seat.

For around $400 shipped, they even put the Porsche crest on the headrest.  Of note, it looks a bit lop-sided, however, that is imply because the picture was offset.  It is straight!