My street rod has a mild cam in a 350SBC, I originally had Turbo's which gave a deep sound but no snap, pop or cracks like glass or steel packs. I had it changed to add a H Pipe between each side and added Flowmasters. It gave a deep sound but much richer. Cool thing is that at about 25 miles per hour it hits resonance and rattles my neighbor's windows as I leave the neighborhood.
Just got to love it>>>>DAVE