kooks catted-y
$8!!! That's crazy. I got a couple of plugs from autozone. Try searching, I found the thread measurements on here. If I remember correctly a oil plug fits.As far as the sims, leave them in. If you want to get some money back out of them you could find a set of old O2's at a junk yard, cut off the sensor and plug the pigtail into the connector.

