Ford running out of diesel engines

I don't think this has much to do with not offering it in the F600. The medium/heavy duty market is very cyclical meaning you generally have a several years where you can't build enough trucks followed by a few years where they just sit on the lot. Regardless of how backed up we are, we still at least offer all engines and products on the truck specs even if they are not currently available and build date is over a year out. We would leave it up to the customer on whether they wanted to wait or go with another option that put the build date sooner. The only reason why we would not offer something to be ordered from a year model is if it has some sort of block on it due to a safety recall, not yet certified, and so on.