I currently have on eBay one NOS AC Delco GF432 fuel filter, p/n 5651480. This mounts in the fuel line on the front of the engine in various 1969 to 1972 Chevrolet models, big block or small block. In addition to the fuel in and fuel out ports, it has a smaller port on the top side for a fuel vapor return line. I do not know all the different models and years that this fits, but if you need one, you will know. I had it as a spare for the 1969 Chevelle SS396 that I used to own, but I know that it was also used on the 1971 Chevy Monte Carlo 350 that my wife owned many years ago. It is brand new, still in the original factory packaging, and kept in clean, dry storage ever since I have owned it, which is over 20 years now. This is functionally and dimensionally identical to the vintage ones but the external graphics are different than the older originals. Perfect for your restored Chevrolet, when only original GM parts will do. This is being offered with a $3.99 minimum bid and NO RESERVE. Auction ends Wednesday night 6/26.
Link to eBay auction:
https://www.ebay.com/itm/266866614401