Does anyone have personal experience with Bosch one-wire O2 sensors? Are they any good? I can get one for my '93 at Autozone for $19, and the dealer wants $107 for a AC sensor. Seems too good to be true.

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'93 1/2-ton Cheyenne 2wd
408" smallblock with vortec heads, 9.2:1 CR, Performer Intake, 454 TBI, Comp Cams XE268H cam, custom chip, Thorley headers/true dual exhaust. 375-400 HP. 4L60E w/ Trans-go kit.

I've got bosch O2 sensors from AutoZone in two of my cars.They pass emissions with no problems.