For my L76 I used Ford clevo mounts. I was advised to add the bit of angle iron to prevent engine roll, sort of a mechanical stop. The chassis had hollow bar already welded on to accept some other sort of mount, I just had to extend them 1/2 inch or so to fit snug in the clevo mount.
I will replace the 50mm flat bar bolted to the engine with a plate that uses all 5 holes on the block.
I reckoned that I would be able to get clevo mounts at any corner store if they needed replacement by the roadside and that upgraded mounts would be readily available also.
As far as experience with them goes,,,,, I can only say the engine never fell out on my 200 metre test drive.
