I go out with the Ferrari and Lambo boys here as well. Calgary is known for upgrades on exotic cars. So loud exhausts are fairly common place.
I do have one recommendation for CAV owners. Put on straight pipes. I just installed a new exhaust without the single muffler. WOW is it loud!! GLORIOUS exhaust note.
On the CAV I fabricated straight pipes and put them on. If I want the muffler setup, I just have to remove the straight pipes and install the muffler - 1 min.
But, so far all I want is the straight pipes. The sound transforms the experience.
Nothing beats bystanders bypassing a Ferrari or Lambo and taking pictures of your GT40.
GOD I love Gt40s.