How will I like this Exhaust Setup????

I have heard the GMMG exhaust and loved it! I was thinking about putting the similar style Summit chambered mufflers on my 79 Cutlass with a Gen 1 350. How do you think that would sound? It has mid-length headers, no cats, 2.5" X-Pipe system and exits after the rear tires. Would there be a lot of resonance? Any input welcome! Thanks

Someday a LSx Motor/T56 will live inside my Cutlass!

Probably give it a good ol' muscle car tone! I say go for it! I'd go with an H pipe though.

Why an H-pipe I already have the X installed. Will it resonate like crazy and drone inside?