Well, if you're really set on solid mounts and ambitious, you can always swap out the spool k-member for and sandwich type and use Moroso mounts! But that's more work than fabricating & welding the end caps on the spool mounts. One last option would be a motor plate. But that leaves a long, unsupported area between the water pump & trans mount. (Not good if the trans blows.)

Poly can't be that bad. It's debatable, but I've always liked the idea of a torque strap as well so the actual block isn't stressed, even with solid mounts.