Yeah I'm not a fan of the vibrations from poly mounts but also not a fan of failed parts either.

I would assume that that even though I would be paying $90 bucks extra for a bolt through a stock motor mount I might be happier with less vibrations. I'm also in the works of replacing my sub frame and will be using solid mounts and eventually use Detroit speed weld in SFC. So I would guess I with solid frame connectors the motor vibration would be even worse.