I know what you mean. Like I said before, my catalog only lists the 225. I went to a converter builder in I think it was New Hampshire, and they list the converter as for a 318 and a 6 cylinder. From that, it would appear both builders are saying that the 6 banger only has one converter (other than a lockup) from 1968 and on. There are two listed, both 11" in diameter. One has a stall speed of roughly 1800-2000 and the other 2200-2400 rpm. I don't see any stock 10" converters listed by either rebuilder. Hopes this helps.
