I bought the spin-on oil filter adapter.  No where in the directions does it tell what is the proper oil filter part number to use. 

I assume it is the same as the old Ford spin on filter that I have purchased in the past dozens if not hundreds of times.  Vaguely, I remember Fram PH-8???  I went to O'Reillys and their chart does not go back to my old '59 Ford or my old Maverick or Econoline.  I have spent an hour on the internet trying to get the same info with no success.

One more question.  I have a '56 2 dr and I don't see a lot of room for the filter.  Wasn't there a stubby version of the same filter for use in tight places?

Thanks guys, I know I'll get some good answers..

Pg. 3 (They didn't waste any time in those days) of the Operator's Manual for my Truck is titled "The Value of Regular Maintenance"; after the initial pleasantries identifying me as someone who "understands value", due to my selection of a Ford, it outlines 11 of the Owner's Responsibilities, and the first 3 are

1. Check Oil Level Frequently
2. Use the Right Engine Oil
3. Use The Right Oil Filter

And sez:

"The engine oil filter is EVEN MORE IMPORTANT in preserving the internal condition of your engine."

That's almost certainly true, or at least the engineers would be in a better position to know. I'll take their word for it. Can't see any particular reason to save $.50 and use anything but the FL-1 or the WIX equivalent.

It isn't necessarily the filtering and obssessing over whether its 0.2 or 0.3 microns between brands, that we should be concerned with. One thing to note is how they are constructed, the actual location (and materials) of the bypass valve. Less expensive filters will allow dirty oil to drain back into the sump and circulate. Store replacement filters in their original box and also inspect the insides of the filter with a strong light for any manufacturing debris or defects prior to installation.