318 to 440 dart.

Go with the Schumacher mounts. Make sure you get the shim kit. You may have to move the motor up a little, every car is different. Also look at the Schumacher torque strap. Works very good. You will have to do a little trimming on the driver side motor on the K- frame, if you plan on doing any racing, weld the mount good just for safety. The Schumacher headers are also very good, even for 11.40 car. Have not had any issues with this set up for 8 years now.