I think the Ford FL1A has the anti drain back valve. I have used them plenty of times on a small block with a 90 degree adapter. I use a gray scuff pad to get the Ford logo off, and then put a Mopar Performance sticker on it....lol.
I'd rather see a Ford filter on a MoPar than a Fram. Wal-Mart SuperTech filters are MUCH higher quality units than Fram! I run the SuperTech ST-2 on my Ford...
