stay away from the E3 ...i put them in my Charger srt8 and man it scared the snot out of me...i thought my car was going to blow up..misfiring and the car ran like crap...i paid alot of money for them and they still sit in my garage....supposely they have some type of warranty but i couldnt find my receipt...so im sos...

 

i bought the ngk ones last week and i think this weekend i will put them in thanks guys for the help

 

just my 2cents, i had installed the E3's in my 00 durango 5.9 R/T and never got any better mileage and could not feel any difference after using them through 3 tanks of 93 oct. not sure what else to say other than i will not be putting them in my new ram.