I think Wal-Mart is no longer going to carry AC Delco (bummer).
However, I noticed the Super Wal-Mart has Rapidfire plugs on clearance for $1.00/pk (2 per pack). So $3.00 gets you a full set of Rapidfires.
The catch is my Wal-Mart only had #3 and #14. These were in a special clearance isle close to the pet supplies and pharmacy area.
#14 is the plug for 3800 Series I and 3800 Series II engines. I need #8's... if you can get #8's at your local Wal-mart and need some #14's, I'll gladly go get some and swap ya.