Wow, never though a truck oil filter adaptor would bring that kind of money. 1 year only though. On the subject, when I found my 1970 428PI it was in a 1971 F250. It still had the oil filter adaptor from when it was in the Mercury police car. To change the filter you had to unbolt the drives side motor mount a and jack up the engine. FYI the 70 PI uses the same one as the CJ, saving me some money finding correct parts to make it a CJ.
Do the C5TE oil filter adaptors have much value? I have 1 or 2 in my parts collection.