Thanks 3B! But not sure what you mean by "1955 second series with 235." Does that mean that it was made to go with a 235 even though I believe my engine is a 216? Is there any issue with that? For that matter, I'm only going by the sales info that indicated that it is a 216, I have not actually been able to confirm that it is a 216. Still looking for a definitive way to tell the difference since it is reported that the outsides are the same. The quest continues....