Those "world class" mounts can't possibly break since they are encased in a tube. They are somewhat similar to what most 2017 cars use ...


But rather than re-engineer to mounting system, most used a stronger type of standard insulator
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These round 'puck' insulators are similar to the stock Datsun insulators. They are rubber bonded to metal plates. But depending on the quality of the rubber and the bond type, some of them hold up much better

According to our wiki article Upgraded_Insulators ones made of polyurethane (racing type) are recommended -- for racing
Quote:Kelpro MT8156N



then there is the revised Maddat insulators, they were made softer to improve durability

More info and part numbers are in the wiki

You don't want to buy them by looks. Some look good, but are no stronger than the factory type. Others look exactly the same but are strong enough for off-road (dirt) racing

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The main reason the engine mounts fail is because the engine and the front cross member are wrenching away with apposing forces and the rubber part of the engine mount where the rubber is adhered to the stud mounted plate fails .
If you drill a 8mm hole 15mm up from the normal mounting stud thru the engine mount bracket,thru the engine rubber mount then thru the cross member mount(parallel to the rubber engine mount stud)then put a grade 8 or higher threaded stud into the newly made hole and double nut both ends with 3mm clearance so the stud has a small amount of clearance to float.
This will all allow the compression of the rubber mount to function normally and when the engine lurches away from the compressed state it will be restricted by the floating stud.
The appearance will be almost normal but your engine mounts will last a lot longer.