Buzz,
I am running Royal Purple
Synthetic "Racing 41" and I use a reuseable System One
oil filter. One of the best things I have ever put on the ole snake. Each time I change
oil I get an idea of how much wear I have to the engine when I clean my stainless steel filter with CRC cleaner.
But if I wasn't running the System One I was advised to either run Motorcraft, K&Nm, or a WIX (same as NAPA). If you are running a Canton
oil pan and I think you are, you will need 8 or 9 quarts oil.
Clois