I was in the same boat until about 15 (or so) years ago. My 69 Barracuda FB has a 375HP 340 in it with a 4 speed and a 3.55 rear end. It was a lot of fun to drive except for the way it wallowed around corners and traffic circles. I put a Hotchkis front sway bar on it and the transformation was AMAZING! It will require a bit of welding, but I easily did it in one afternoon. You will NOT regret it. Huge improvement.