The stock Fiero 84-87 front cradle bushings made very good engine/trans mounts; but they are out of production and are no longer available. I've been trying to get the Fiero Store to reproduce them, but it does not appear as though they are interested.
What's available now, that I have been able to find, are rubber control arm (suspension) bushings like what some other guys on here are using. But they are made of a harder rubber compound (than the Fiero cradle bushings were) that don't isolate engine vibrations near as well. They are still better than poly bushings, however.
There are several stock rubber engine mounts available from a host of applications that can be used to make custom engine conversion mounts. But the problem with many of these is they aren't that strong and the likelihood of them being pulled apart in a supercharged 3800 application is quite high. Hence the reason why I used the Fiero cradle bushings as long as I could - they could not be pulled apart the way I designed them for use in this application.
Perhaps if we could get more people to lobby the Fiero Store to get them to reproduce the rubber Fiero cradle bushings, they would start making them which would make them available for use again as an engine conversion mount.
OVERKILL IS UNDERRATED
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