So could u guys tell me is there any real difference in a 2003 / 2007 5.9 motor or are they the same but different years . If there the same is there a difference in trannys ? Trying to figure out what year to get . Thanks

 

06 best year! Injectors and pistons are different! Switch is in 04 1/2

 

Also keep in mind for tuning purposes EFI is 06+ Years- older than that other tuners are used edge/smarty/bullydog

 

Cool thanks

 

Not positive on this but for 03-04.5 you had the he341 unless it was high output which was the he351 and the later ones all had the he351.