Originally Posted by
Matt Trimmings
2 hole are molded out of a stiffer plastic. The hinge pin hole is also drilled and not molded making it have less slop. The 3 hole is molded out of the newer plastic and the hinge pin hole is incorporated into that mold. You will notice a difference when installing the 2vs3 hole blocks on the car on how tight the hinge pin goes in.
Not only that but the little screw that goes into it actually tightens a small amount likr finger tight with the wrech where as with the other three hole one I did that and it stripped... lol