Yea, it's really the way to go and you don't need to much. A few dollars is all and a little time of course.

Send your PCM in ahead of time, unless your going to let the speed shop have it after.

Gottuh watch it tho, once that HP bug bites yuh, - it can be unforgiving...

 

Since I have a four6, what will I need?

 

Everything but. - Same DT, Truck and PCM.

 

I'm sorry this is my very first post I don't mean to reopen an old thread, but I had a few question I have a 01 ford f150 5.4 4x4 with 35 tires a friend of mine said I should look into changing my ring and pinyin gear to help become faster and turn the tires with less stress. Any advice on what size , brand or just any info would be awesome thanks.