ESPO Springs n Things lists a front end rebuild kit for Eagles. They have both rubber and poly (or you can mix and match when you call to order).
I vote go rubber for a street car.
I've used poly mounts before and they squeak a LOT.. Even with a ton of lubrication, it always comes back.
For a car you plan on racing, it's a good improvement, but for something stock or trail/road, I would stick with rubber.
They're also pretty harsh riding, and it gets a lot worse in the cold.
I know several people who have put in poly mounts, only to hate it and put rubber back in.