You would have to drill through the metal K-member, the rubber mount and engine side brackets, so it will allow those parts to sit flat on the rubber mount. You'd also have to use a thick enough grade 8 bolt to be strong enough and similar strength hardware ie washers and two nuts to jam together to stop them from coming unscrewed, so it wouldn't vibrate loose. It would have to have enough play to let the rubber motor mount move, and would be difficult to drill and install unless the motor was out. What if it rattles and makes noise?
I've seen guys use chains on the back side of the motor mount, and they were hard to see.
Schumacher or Mighty Mounts are much easier to install although cost more. Solid mounts are ok for a race car, but something's eventually going to break on the street. Plus, the vibration is transmitted right into the cars K-member etc.