Agreed, My 93 K1500 16168625 has not only a single wire O2 stock....but one O2 at that, on the driver side. GM cuts corners where ever they can I guess. Heck, my K1500 doesn't even use an air intake temp sensor. One of the main reasons I am switching to the 16197427 and run $0D is to add an IAT sensor and a MAF, however the truck runs great as it is now.
Keith
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