Common problem with current motor mounts. The solution is to fill them with Shore 30a urethane to provide support and prevent collapse.

Here's how to do it - http://www.peachparts.com/shopforum/3061724-post317.html

Here's the finished mounts ready for install.

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Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica