MPG experiment....1976 Dart Lite

Cool. I would be careful on the syn in the trans. They, the Experts, say the syn won't let the sycros slow down and the trans will grind when you shift gears. Chrysler started using AFT in the 70's in manual transmissions to cut friction. The rear should be fine with syn, but if you have a sure grip, make sure to use the Chrysler recomended fluid and additive for the cluches and cones.