I don't know any Mechanics, in Kingman. If you can do it yourself, a head gasket, head and injectors is still going to be expensive.
I would call Ford Customer Relations and ask if they can help.
If you always buy Ford perhaps...
Sad to say the 6.0 has been a problem for many.
I had an 05 6.0 and no problems but Neighbor had several. Traded it and let them fix it and deduct the repair from the value his broken truck, in the trade in.
Sound like you may be in the market for a new diesel.
There is a diesel forum and a Ford diesel forum, on the net, I use to subscribe to.
I don't know which brand is best.