Working from the listed applications from Baldwin for the PF860 and the Rockauto online catalog for some of the uses given by Baldwin it looks as if the Baldwin PF860, AC GF133, Fram CG5 and Wix 33042 are all interchangable. NAPA's online gives their FIL 3042 as the interchange for the Wix and Fram filters but doesn't cross-reference the AC or Baldwin filters.
Pricing at Rockauto - Wix $8.53 Fram $12.55 and at NAPA $11.88 in store and $13.69 online.
From another online source,
http://fueloilandair.com/filters/CG5...V8-283CID.html the following filters should all interchange:
BALDWIN PF860
BIG A 95042
CARQUEST 86042
FLEETGUARD FF132
FLEETRITE FFR-8132
FLEETRITE FFR8132
GENERAL MOTORS 854425
GENERAL MOTORS 854435
HASTINGS PF860
LUBER-FINER LG133
MOTORCRAFT FG 11
MOTORCRAFT FG11
NAPA 3042
WGB S-224-CP
WGB S224CP
WHITE 871646
WIX 33042