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Ok so the 3600 did not fit.. the threading is different.....
I have a 1998 I presume they changed something since it worked on your 96/97 well that sucks.
Ummm, 'if' the 4967/(4386) are the spec filters, then space permitting the 3600 should screw on properly. All list SAE threads, 3/4-16 Th'd. So not sure what could have changed but unlikely it has anything to do with the filter thread pitch.
As noted in prior post, personally think the ~3//4" longer 4386 is all one needs, but it still has SAE threading.