I needed N14 head's!, my Old machinist died!! so I called Internet Diesel they thought they had 5 ready to go, so I made the 620 mile one way trip to Commerce City the Sales rep made a mistake and they only had 2 ready! But since I brought my heads in to exchange they rebuilt one of mine that afternoon and I went home. The next day I realized that the fuel plugs were missing and I called and they 2 day air ship them to me at no extra cost.... I build a lot of Engines, now they have another Customer for life. I was given a small tour of the machine shop and I could see they know what they are doing!! Face to face was the best... I will try ordering on line and do expect the same great service. And of course the truck is back to work.