1995 Buick riviera motor mount discontinued

I have a 95 riviera at 85,000 miles. I've replaced every motor and transmission mount except for one. This one is discontinued and the part number is 22179245. It is the front motor mount on the passengers side. I'm curious if anyone knows if something from a 1995 Pontiac bonneville would work? I have noticed the 1995 regal has a similar mount as well. Any leads on how to resolve this? All the vibration seems to now be on that mount.