Has anyone done this to their 383 or 440 motors. My motor guy says my old motor was trash due to the front main cap was lose. This seems to be one of the things that kill our motors. I was searching on the net and found that the Milodon caps can be used in the motor after extensive machine work done on the block. It is true that finding a motor shop is getting harder and harder. Think it might be the answer in steed of trying to find another block. I was wanting a motor to be bored less than 30 over in the cylinders. So, had to buy another block to meet my needs. My motor guy showed me the cap wobbled and moved in the register area. That would wipe out the main bearing. Also damage the crank. If anyone have thoughts on the subject would enjoy hearing them. Save our motor's.