I started with a 4 cylinder truck and then made mounts for a set of spool mounts I had laying around for a 360. Files are to big for here so I could email you mine if you would like.

56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d