Did some oil filter research today...
Found the Wix 51324, which crosses over to a 91-95 Corvette (DOHC?) filter.. Bought it, threw it on... Fits great, works great and it appears the metal on the filter is thicker (or harder temper) than another WIX filter I had here to compare to (the Motorcraft FL1A-equiv).
18 psi anti-drainback valve, too. Thats what Hyundai specs. Hmm.This filter cost the same $6 as practically any other WIX filter at O'Reilly's.
I'm starting to think the 'maintenance part' guides are more based on profit margin than fitting the optimal part. Theres absolutely no way the 51334 (the 'suggested' filter) is best, especially since the 51344 has nearly identical specs as the 51334 with slightly larger filter area... they certainly don't spec that filter :P
JS