I'm building a 392 and interested in offset grinding either a 345 or 392 crank for more stroke and to bring the pistons up in the block. Problem is I can't find bearings with more than a -0.040 undersize. At one time I thought I saw some -0.080 bearings, but I can't remember where I saw them and can't find them any more. I also thought Tom Mandera had mentioned he had a source for -0.060 bearings, but if he said where, I couldn't find that either. So, does anyone know where more than a -0.040 undersize bearing can be found? Also is there any advantage to using the 345 crank over the 392 assuming I will lighten the rods. I have both cranks, but I have concerns with the condition of the 345 crank.