The atx mount is on your driver's side fenderwall. just need a socket and rachet perhaps a wrench and some patience.......
You will need to prop up the engine to keep it from putting any further pressure on the atx case...a block of wood and a jack to slightly jack up that side of the engine.
Don't ignore this, it will/can crack your case, etc which is a problem you don't want to have...
Bob
P.S. Good for you for spotting this...many don't.....
