I've been running poly/poly for a few years, with the ES mount without the preload plate on the trans. It was a little rough at first but after a few weeks it improved. Just recently however I threw a rubber trans mount on to see if it would quiet things down at all and it definitely did. Not going back to poly for the trans again.
__________________
|2000 Trans Am|T56 swap|Bolt Ons| Suspension|
|