Current best motor mounts?
Not sure if your mounts are the same style as mine, 67 bb.
I went through all the bs with engine mounts.
Poly engine mounts are garbage, the engine twists, it does not lift up on the driver's side while the passenger side stays put.
New steel engine mounts are garbage, they do not have the correct corners/edges that wrap around, the steel is not as thick or as good quality, they bend without even trying.
Old steel mounts, new or even old rubber isolators, drill a hole through them, you'll need a good drill bit because they are actual steel, put a bolt through it with a lock nut, do not tighten all the way, leave some wiggle room.
Or straight up solid engine mounts.
Trans mount, I have the poly mount.