need 360 mounts for pre 72

You only need the driver's side bracket. Or, as a bunch of people will tell you, use a bunch of washers and make the 318 bracket work. I personaly would get the correct bracket.

This is assuming that the car is originally a small block car. If it's a slant six, you'll need to get the kit for Schumacher.

http://www.engine-swaps.com/