289-302-351W-351C have the same pattern. The 302's typically came with a 157 tooth auto flex plate and the C with a 164 (?), so a "big bell" C4 (pan fill, I think?) would fit on the stock flexplate and the more common smaller bell will not fit over the flexplate. I believe the AOD uses the bigger plate. And, the motor plate will need to be from an AOD.