fitting a universal O2 sensor

[the quiet achiever]

hi

i `ve had aquick search on O2 sensors & find that most ask about type etc i have ascertained that the N/A has a4-wire sensor

has anyone recently replaceed theirs with a universal one ??

did you have any trouble matching the unit to the std wiring ??

what brand did you get ??

are all 4-wire units the same ??

anything i should check when buying a universal 4-wire unit

thanks lyle