Originally posted by Beater of the Pack: [qb] I'm not sure about the wideband O2 kit. The MSD,Holley,or Edlebrock books don't seem to designate their O2 sensors as wideband.Edlebrock calls one,#36013 a narrowband. MSD#2330 heated,Edlbrock#3591,And Holley#43-106 & #534-27. Am I close?