[Mike C]

We paid $900 for a local shop to build the exhaust on my kid’s Jimmy. And we provided the mufflers. We ran 2 1/2” Corvette manifolds and there is no off the shelf bolt-on solution.

We ran 2 1/2” all the way and used some 6’” round cased Magnaflows because I had them from a parts truck.

I had two takeaways from different Engine Masters episodes: 2 1/2” is plenty for 500 whp and the Dynomax turbo mufflers are fairly cheap, pretty quiet and didn’t cost any real power.