I got a D16z6 and I'm not sure which main/rod bearings to get but these are the letters I see on the block are B,A,B,B,C and for the Crank B3, 2,4,2,3 for main bearings.
And for the rod bearings I see B3,D,B,B that is on the crank. And 4,4,4,3 on the rods. Do I take these numbers and letters...