https://www.ebay.com/itm/153460968841 I have this on eBay it’s from a 1953 and I am no expert but I had the original 216 and it doesn’t look like a 235 was available for the 3100 in 1953. I believe I also had most of the original exhaust as well. So it could have been a combo exhaust manifold for other cars but I have the angle as well.