back when I was in high school, 1974, my first mopar was a 1970 340 4 speed dart. I had a buddy that had a 71 340 automatic duster and his brother had a 1972 duster with a 360 4 speed, we drag raced on HwyY just outside of town and I could always beat the 340 auto by a car length, the 360 duster just depended on what side of the road I got, we were neck and neck. I currently have a 69 cuda with a 408 stoked 360 with a procharger, 4 speed and man is it fun to drive. Have built several of the 360/408 engines for others and they all really like them. With the reasonable stroker kits today, a 350 or 340 is really a mute point, unless you are restoring for numbers correct vehicles.