I don't know of any main bearings with over-thickness thrust faces. Some engines with separate thrust washers might have a thick washer that can be filed or sanded to fit, but I've never seen stovebolt main bearings like that.
One racing engine I ran needed a thick thrust face on a main bearing to salvage a very expensive crankshaft, so we fabricated a lathe fixture to be able to machine away the bearing material on one side of the thrust bearing and replace it with a built-up layer of silver solder, then machine it the right thickness to control the crankshaft thrust movement. Between making the machining fixture from a couple of discarded main bearing caps and doing the machining and welding, we probably had $500.00 worth of labor time involved. Of course, we also salvaged a $5,500.00 billet crankshaft that would have had to be discarded otherwise!
Jerry
