well, the factory motor mount for the L series six is a solid design with a rubber pad on the bottom. I have poly bushings where the engine mounts attach to the arms coming from the crossmember. The arms are made of 3/16" steel, very thick and heavy and professionally welded. In short they won't break, and they won't bend. Twisting forces, I guess that could be an issue down the road, but if it is present, then regardless of what style is used it would be present. the style used is one that is currently used by a ton of guys running LS powered cars. If you can grab this engine at the top and pull on it, and bend those 3/16" steel plates you have balls of cast iron. In fact I would be seriously willing to wager $1,000 that you could not do so. You could take these out, put one of them on its side and stand on it and it wouldn't bend. I will allow that something could go wrong.....I'll address it when it does. I appreciate the points to ponder though. Cheers.