[dsraven]

Sorry to say that is a front main engine bearing cap. They are machines to fit the block and then they all get torqued up and then the bores of all of them are lined bored so they are all straight inline etc. Needless to say that they are not generically fitted so you wanna mark it and remove it and see if it is fixable without finding another one and then having the engine line bored again. To do that the bearing caps are removed, cut down on the flat machined side, installed and torqued and the align bored again.
Sorry man.
Maybe you can simply drill and tap some new holes in a different spot and make it work without all the extra trouble. Whaddya got to lose by trying?