motor mounts

The premium ones referred to are probably the polyurethane ones for earlier engines (rectangular mounts) I have seen advertised. They also have interlocking metal fingers that secure things if the rubber fails. The poly should last almost forever, which is one advantage, but I think they are mainly marketed for racers who want a stiffer mount, at the expense of driver comfort. Costs around $100/pair as I recall. Of course, I could be thinking of my early V-8 mounts.