The C4orce motor mount adapter in action. look closely, and you can see the plate aggressively linking block and motor mount. The plates are machined from 31/48-inch-thick steel and bolt to the block using the original LSx mounting holes. "Old-school" motor mounts can then be bolted to the plates, whereupon the engine will fit the chassis as if GM had intended it to. The plate accepts all three motor mount bolts; the lower one can't be seen in this photo because it's behind the frame bracket.