just ? on, o2 why delco over bosh,and plugs, delco vs autolite 203s
Bosch goes bad within months. Trust me, went through 3 Bosch O2 sensors within 8 months because they were cheaper. Went with AC/Delco, no more problems.
I've never used Autolites, but before switching to Delco plugs, I used Bosch Platinum 4's and Champion Iridium plugs...neither compared to Delco.
The AC Delco o2's are a lot better quality compared to the bosch. As far as plugs go, the stock/cheap ac delcos work very well in these cars. I am running autolite 103's in my black car at the moment though. I had the autolites already(bought several packs when my local walmart was discontinuing the 103's, 104's, etc.), so I tossed them in there when changing the plugs. I'll probably go back to the delco's at the next plug change.