[SHELBY_FAN]

Ok this is my first post so if its in the wrong spot im sorry.

A friend of mine has a small block intake 2x4 low rise that has shelby cast right in it has the firing order and a serial number on it . he was curios as to what it may have came off of ? He has had it since he was 14 bought it from a guy for $35 he is now 39
any ifo would be good .Thanks in advance