I'm currently running a Peak Diablo .15 side exhaust in my NTC3 to see how it goes. I picked it up for $40, figured I couldn't go wrong.
I was actually pretty surprised at how well it ran and tuned. What I don't know is how long it will last. I've run ~1/2 gallon through it now and it doesn't have that much compression compared some of my other motors. It did run plenty strong at the last race so??? I've been running O'Donnells 20% race blend fuel in it.
I've got a SH .12 Pro Turbo rear exhaust motor waiting to go into this car next. I'm just waiting on the exhaust system.
Here's some pix of the Diablo;