Solid Motor Mounts?

Solids are pretty oldschool. The idea is kinetic reaction. The same reason why drag cars use carbs instead of fuel injection. There is no replacement for physical reaction.

I will say, though, that even with the reaction of a solid mount, the risks involved with high torque and quick shifts can start breaking things. Accumulator block rods in transmission shift kits and solid mounts. I've seen two trans cases peeled like an orange from that combo, up at the track on 11sec cars.

I'd go with a poly lock first, if I had to, on a disc mount. Urethane spool will do the same.

It's longivity also really ties in to driving habit/ technique. Most cars that I've driven in with solid mounts have loud exhaust and I can't hear myself think from the resonating in the cabin.