The difference between the 3.36 and the 3.23 would be so slight, you may not notice an improvement in fuel economy, if that is your goal. It's only a 4% change in ratio, which would mean that your engine speed, currently 2000 rpm, would drop to 1920 rpm. The payback on a new set of gears would be quite a long time.
What does the car have in it now?
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching
