70 dart 6.4 8hp70 for mom

Ok did some work today. TTi mounts installed. Holley oil pan kinda installed my torque wrench was not behaving. Tried to test fit engine in the car. Does anyone out there know if you can use an 8hp70 In a 70 dart with a 6.4. Can't find a mount at holley and quick measurements say it to long. Car is going to the body shop tomorrow.....