"H" or "X" Pipe advice Please

H pipe doesnt reroute exhaust, it just equalizes the exhaust pulses, tones down the exhaust noise and resonance quite a bit. No flowmaster tin snare drum sound. Best H pipe setup would be 3 bolt flange connection so you dont have to pull slip fit apart, just unbolt it. My old 340 had an H and the exhaust sound was mellow. Check out the Pontiac Tempest 421 big block nostalgia drag car, it has headers out the front wheel wells and a 40 inch H pipe across the lower suspension!