4 speed OD with 3.91 gears

I ran this in my dart with 410 gears for several years. worked great except for performnce I couldnt hammer it and shift hard going from third to fouth or it would break.I broke mine once and learned to go easy on it. From stoplight to stoplight its good. I drove mine from ark to ohio to the nats and got around 17 mpg. I would say go for it.