Put the car up on jack stands if it isn't already (Hehe) to give yourself some elbow room.
Disconnect the battery as the starter is close to the passenger mount. Do one at a time. Pull the long frame bolt out. Raise the motor a couple inches to make some room and unbolt the mount from the block. Reverse the process. Do both sides.
It will take a little while as space is tight. Sorry I don't have bolt head sizes, it's been a while.
As TurboTGuy says, use H&R motor mounts or stock mounts with the RJC Racing motor brace.