I every 1 Im glad to have found this sit I wish i new about this along time ago it may have helped me save some $$$ when i biult my 351c Any ways I found this motor i dont no what it is looks like a ford but im not for sure The intake port size is 2 3/4 hi 1 1/8 w The part number is EDG_8425-A I dont no any thing about the erly part numbers The exaust ports look like a ford fe with ram horn exhaust manifolds but the intake dont look like a ford hears a pic