I picked up a very clean '08 F450 5R110 150K miles Lariat 4x4. Blown 6.4. for $8k.
Found an '08 6.7 Cummins complete engine 103K miles for $4500. A donor Ram truck could be better because you get all the little things like the Cummins down pipe to mate to the 6.4 exhaust and other odds and ends.
DCS Conversion kit $5000. Sold 6.4 engine for $1500 and bought a BD Iron horn turbo. Sold VGT turbo back to BD for $450.
You do not have to lift the cab to do the conversion. Its a little tight to get that 6.4 out. The Cummins is a cake walk to slide right in. It gets a little tight on the Cummins turbo side because of the intercooler piping and the AC lines fighting for the same space. I did a lot of mockups with everything to get the fit just right. But the Cummins looks factory sitting in the engine bay.
A few tips:
To weld Aluminized piping, fuel lines and intercooler piping. Pour Muriatic acid, not the tame stuff, but the strong stuff, into a flat bottom plastic container to about a 1/2'' level. Then dip the end of the piping flatly into the acid. There will be a lot of off gassing. Have plenty ventilation and follow the Muriatic acid precautions. It will only take about 15 seconds for the aluminum to burn off. Now you can weld the piping and paint your weld.
To the transition from the Ford fuel supply lines to the Cummins Fuel filter. Cut off the quick connect ends of the Cummins fuel lines. Then measure and cut the amount of the fuel line you need from the 6.4 engine fuel lines and weld to the Cummins lines.
I am Towing Combined Gross Total Weight nearing 30,000 lbs. What a truck! Especially for the money.
Have DCS remove the tuning fee from the package and go to fumminstuning.com for the tuning. My truck is listed in customer rides.
Fully functional dash.
5R110 has no idea its hooked to a Cummins.
The only way to know its a conversion is to raise the hood!
Happy to help anyone if they have any questions about the conversion.