Magnum going into '73 Dart...which spool mounts? Where to buy?

I was going from 68 style motor mounts to 73 style so I needed the whole mount. You aren't converting anything really just going 73 318 to 360 so your old mounts are the mounts I bought just new. Just buying the insert as pointed out might save you a few bucks but the whole peice isn't that much more. You do need a bit of a spacer on one side just to make up a gap in the mounting ears on the 360. You will see it when you line it up. The expensive mounts are to fit v8 where a six was before or a big block where a small block was.