- Jan 28, 2004
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i know the lower can be ported but can the upper be ported as well or are the walls too thin for that?
what gains would be had in porting a tubular gt40 intake upper and lower?
if both is possible what kind of work needs to be done to the intake to get the most flow outta it?
what gains would be had in porting a tubular gt40 intake upper and lower?
if both is possible what kind of work needs to be done to the intake to get the most flow outta it?