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I believe in Global Warming in that the Seasonally Frozen Wastelands no longer get cold enough to get rid of riff-raff. Whether PEOPLE have caused that, is still debatable. [Ooops. Lost a quote here, and I'm too lazy to find it again. It was your "B" point--"because you have yet explained why cat converters should be required other than it makes a funny smell. "] 1. Because they're effective in reducing tailpipe emissions 2. Because they eliminate the stench of hydrocarbon emissions 3. Because the high-flow, monolithic cats aren't restrictive like the original GM pellet-style. The only benefit of pellets over honeycomb is that the pellets could be removed and replaced--making that style of catalytic converter "rebuildable" 4. Because it's Federal law. I don't know about the manufacturing of cat converters. If you say they're not made in the US, then I agree that's a shame. Whole swaths of American industry have been wiped-out by the Communists, and the Communist Collaborators in Industry and--especially--Government. I'm more concerned about the hollowing-out of the Medications industry and the Electronics industry than the exhaust industry--but all are a problem.

The forum OGs started the count over when the G-body Grand Prix's went FWD into the W-body back in the 80`s. I get both sides of the argument but has there ever been an official sit down at one of the old meet ups to determine who is right over this?

To be honest * & completely neutral on this post* I don't even Know what a 7th gen w body is?

I'm intrigued for sure. To put in that extra percent or two takes a monumental effort. Not worth it for most people, but I appreciate your hard work and dedication for sure.

Thanks Rich, I'll pass on the mufflers, for now I will keep the existing original exhaust until it's ready to drop on me.

Hmmmmmmmm........there are only 3 gens of the W platform 1st Gen 88 thru '96, 2nd Gen '97 thru '03, 3rd Gen '04 thru 08....the Impala did continue as a 3rd gen W platform vehicle until 2016