Engine mount confusion

Not trying to hijack, but would this work for my setup as well. I have a 68 Dart with a 71 V8 A-body k frame, and 71 318 mounts. I'll be bolting in a 5.9 Magnum in a couple weeks
More than a few people have recommended this as a solution so it can't be that bad. I would recommend reaching out to engine-swaps as they know their stuff.