5.3 vs 6.0 intake manifold?

[stngh8r]

i got port and polished stock heads, and switched to the TBSS 90mm intake and shaved over a half second on my 1/4 mile times, on motor. maybe that'll help with your decision.

For clarification: The ET change was with both listed mods or just the intake?

[mean05]

For clarification: The ET change was with both listed mods or just the intake?

his was both heads and intake...