Same basics need to be covered with the 6.4 that you would cover with the 7.3 & 6.0? Down to one micron and engine at least 160 degrees? If money was no object (I don't object to it...I just don't have enough) I walk into my local Ford dealer and order exactly what I want...but when you consider the price tag would be close to what I paid for my home...cough, cough....I think I'll stick with a slightly used truck and save a couple of beans.