Yep, two sets of plugs. One thing I am noticing is that 3 and 4 plugs are burning white while the others are burning light to dark choc. brown. I am running the 4412 two barrel on a wodden type adapter on a victor junior 4 barrel intake. the wodden type adapter has slots in it where the carb can be positioned front to rear if need be. Could I have a problem here? also, I am running #80 jets in the carb.