No distributor mon frere, coil pack (i think thats what they're called?) for each cylinder bank.

 

my bad i forget the newer trucks have those i havent worked much on anything past 99

 

Gone through 2 tanks of gas since changine plugs to the E3s. First tank was i averaged around 15 mpg with some highway driving. The second tank was around 15.2mpg again with about 50% highway driving. The weather has been warmer as of late and the roads are clear of snow/and ice so that means no 4WD and no morning warmups. I'm sure that has some affect on my mileage. So did the plug change affect my mileage???? NO IDEA.