2001 Grand AM GT 3400 V6 motor mount?

The passanger side motor mount looks to me like three parts, the rubber part mounted to the frame, the metal part from the rubber to the block, and another metal part bolted to the block and to the metal part from the rubber part. the metal part that is bolted to the block broke, while the metal part from the rubber part looks fine. Can I buy and replace just this one part or do I need to replace the whole unit? and will this same part of the mount be found on other GM 3400 engines of the same year? thanks.