[Michael C Henry]

I managed to bolt through my mounts countersunk screws and self locking nuts. not anymore than snug so mount can move a little as designed.
When I was running a full sized cars I made a bar that bolted to left head at front corner of engine. The bar extended outward a little past the head. I then attached another piece of metal that would take the pull to the frame inline with the head mounted bar. I then welded a short length of 5/16" chain to the end of the barr on the head and to the metal mounted on the frame. The chain was straight with no slack when at rest . When the engine was under a pull the chain was tight and held the engine from torqueing over. For the most part you would never know that there was any devise in use. Normally, No vibration was felt from engie to driver.