Who makes a quality urethane motor mount for the 1973-76 V8 Dart/Duster/Valiant models?

I mean you’re paying $100 for $15 worth of hardware, none of it is specialized stuff.

The only advantage I see is that it looks like they sell 318/340 mounts, last time I looked all the replacement ones were for a 360 so you have to use a spacer.