2.5 complete exhaust VS a 3.0 complete exhaust
I'm running a stock Magnum with Airgap, Doug's headers, Jeg's mandrel X-pipe kit, and 2.5 inch all the way with cheapo turbo mufflers and my car runs and sounds perfect for me. I wanted something quick that was quiet and no drones. It's actually much faster than I thought it would be!
The only 3" or larger I will ever install will be a turbo downpipe.