65 dart tranny upagrade.HELP

Should be a direct bolt in barring the shifter problem you might have that bb66cuda mentioned.

I'm sorry but I do not agree that a 727 is a must in this light car. There are many drag racers running 904's in 11 second and even faster cars. If it were a heavy B-body car with a 400+ hp engine things would be different but If your not running over 400 hp in your lightweight Dart the 904 will hold up just fine. Install a Trans-go TF-1 (heavy duty) or TF-2 (street/strip) shift improver kit in it and it will last a long time providing it's in good sound shape to begin with.

BTW: The older 904's used a different spline count torque converter so make sure and use a converter for the 76 in the 76 trans.