VERY interesting point. By chance, every Camaro I own is a Norwood build. Maybe there was a difference between the two factories? The rubber does bind to the side slightly on straight bars. I was told that first design had an offset rod. But if true and it worked so well, why install thousands of straight rods after using the offset. Could be a fun research topic. Trying a big block one on a '68 Muncie shifter fits Perfect with NO rubber binding. So just wondering. ... Danny