These are solid replacements for the factory motor mounts for the Trailblazer SS. They were designed in Solidworks from a set of stock mounts putting the engine in the same location as the factory mounts. They are made from 3/16″ laser cut steel and fully MIG welded. The bolts are welded to the frame plate to make assembly easier and are grade 10.9 and use the factory nuts for mounting. The mounts can be left raw or be painted black, but if left raw they need to be painted for powdercoated or they will rust.
The taller mount is the Driver side with the shorter mount being the Passenger side. Solid mounts are very strong, but also have ZERO give. There may be some additional vibration, especially at idle, but if you hard mount a turbo for instance you need to use these for the engine to prevent cracked manifolds from the engine flexing. I recommend these for race-oriented builds and my poly mounts for primarily street vehicles.
You will NEVER break these under normal use. They have a LIFETIME warranty, any issues and I will replace them no questions asked. If I had to estimate a power rating I would say 2000hp.