318 to 360 mounts?

Changing out a mid 80's 318 for a mid 70's 360 in our '72 Duster. I can make spacers but, does the left side engine mount bracket need to move to the front or rear, to make the 318 bracket work on the 360? I had read that the lugs, on the engine blocks, were spaced differently, but this is the first I've ever done with a small block!

Thanks!