[dsraven]

I've built body lifts before using tubing cut to the correct length and capped with a home made washer on each end. That way you get the height you want instead of what's available at the store. Better than a piece of plastic unless the plastic is a beefy diameter. Just place the spacer on top of the original body mount insulator. Use a piece of wood for a spacer until you get the height you want.