I think the drivers side has more air flow at idle. Not sure. pretty sure. If you have dual exhaust, you can put your hand in front of the dump and feel the air difference from L to R.
~ BD. "You won't find me in an old folks home" Pioneer Florida Cracker 1958 Apache Stepside 1958 Apache 1/2 ton Panel 1959 Apache 1/2 ton Panel
