I never had 180 degree headers.You mixed your exhaust into two paths. I want four. Stahl 360 headers with each pair feeding a cat like this: https://www.ebay.com/itm/70533-East...er-Standard-2-Dual-Pipe-12-Body-/172004440974
would give true quad exhaust. Did your 180 degree headers have to cross banks?
I hear the difference.Hear the difference in this 6 into two,, and the 6 into 6?
Ok.Yes, I'd use four bullet glass packs, mounted right behind he cats to allow the most resonance possible behind.
I guess I need to say that I don't have the V8 car, just theorizing.
If your serious let's yank out that hybrid squirrel.Little embarrassed, a Prius.