Autolite 2964? I think that's a Chevy plug. Something Trick Flow recommended? I was running Autolites in my 273 and they were way too cold. Idled like crap with unburned fuel. On a different note, a friend's Super Bee was running rich. The stock fuel pump was putting out around 8# He tried a couple different carbs and a ton of tuning before he checked the pressure. A regulator set to 5# fixed that issue.