I have been told that the correct AC fuel pump is part number 6470008 with a number stamped on the side of 4G40669.
An October 1969 GM parts book shows this as correct for the “( 327, 350)”. The book does not list one for a 1969 “302”.
Several “correct” ones on ebay do NOT have these numbers.
The pump is for a quality resto, so any information as to what was original will be appreciated.