I have a Flowmaster 40 Series on my '03 Explorer. Huuuge difference with the 4.6Lv8. I agree with the tip though, if you are going to buy an exhaust tip you should just buy an older honda and put a body kit on it for maximum hpzzzDo not get an exhaust tip... or rims for that matter. People always forget the purpose of a 4x4 and throw rims on it. I think it looks awesome as is.