Was talking to an old timer about this very subject just the other day, and he said the best sound and performance would be with a set of glasspacks, or Smitty's, but the difference would be one would be just a tad bit shorter than the other. Makes for a very distinct bark from the 6 banger. I figure he knows what he's talking about. He's forgotten more about these old cars and trucks than I'll ever know. Been involved with racing since forever, both as a builder and a driver. Presently helping his son with an IMCA racer, and over the years they've enjoyed over 100 feature wins.
