This a 52 8BA I took apart this morning. It had been stored for years with good protection for mice invasion. We plugged up everything except the road draft tube, they found it, and thought it was a hi-way to the inside. The little devils built two nests, one in the oil pan and another in the valley. Needless to say the valves were a BIG challenge, but I finally succeeded. Block looks real nice, never been bored! I feel like primitive Pete with all the hammering.