I think my motor mounts are on their way out, so I'd like to replace them.

Are all the bolts accessible with lt's still bolted up to the engine? Do you have to drill out the rivets and replace them with bolts when using GM replacements? Any how to's floating around?

 

I had to remove mine, drill out the rivets, and bolt them back together, not hard to do, just takes a little more time.

 

Were you able to remove them with the motor/headers bolt up and in the car?