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

Yes the 318,360 LA spool mounts will bolt onto the magnum 5.9L. I did it on my 74 Duster and worked good. Be sure to washer shim any gap from engine ears to spool surface; so there is no distortion of block from bolts. I replaced the worn out rubber with polyurethane inserts from PST. That made mounts lots firmer. Good Luck