Much easier solutions.
1. Make the horses walk, they have legs.
2. Sell the horses which will solve many smaller problems, but could create a bigger problem.

I saw a 6.0 that belonged to a mechanic that was for sale.. He had deleted and had it running strong. I drove it but passed

Instead, I bought a new 2019 with the 6.7. It could not be better.

Most of the bugs were worked out in later years.
Have a 2005 F350 6.0 at work.
Crew cab, 8' bed, 4wd.
Pulls 6 to 10k a few days a week.

Liked it so well, bought my own.
Both had EGR issues, early on, covered under warranty.

No issues since.
Stone stock, used hard.
Both at or near 200k.

Both used as trucks, not brodozer, smoke rolling hotrods.

Key is proper maintenance, using CORRECT parts.

The stigma attached to it results in some great deals.
Find one an older couple used to tow a camper twice a year with.
Stone stock!
Run an Oasis report.

Funny thing, have a 2011 6.7.
Cab had to come off just out of warranty.
$700 in parts, $3000 labor....

I hear ya Leftlane. Got 290K on the 2000 Excursion with the 7.3ltr. Rewelded running boards twice. Rust is starting to get her but still runs strong. It usually sits until we go on long runs, "Family Truckster" LOL. Or have to pull something. I think the kids will cry like were putting down the dog when we finally scrap the ol' girl.

I used to be a GM man and ran 6-7 Suburbans. Every body style change they would drive more like a mini van than a truck. You dont have to wonder if your driving a truck when your peddling the EX! LOL
Above pic is this years annual "Christmas Run" at my brothers in SD. The guys up there always guess whether or not the ol' Ex is gonna make it again this year.

Duramax

What Dave said. I have an 05, 200k minimal problems mostly self inflicted. I hope to buy a second one from a neighbor shortly. I have no fear of owning another one. I pull gooseneck hauling hay almost everyday in winter, loads probably with 12k in hay plus trailer weight, heavy. I wouldn't mind having an extra 50hp sometimes.
After 04 they improved hpop design. Mine has egr deleted. I do not have head bolts replaced with studs.

So, to the guys that enjoy 6.0....

What’s your thoughts on a 2004 ford 350 4 door crew cab 8 ft box 4x4 with 210,000 km asking 10,000 Canadian?

Don't know the exchange rate, mile conversion ( just under 100k), or, most importantly, history of truck.
Plus, earlier 6.0s seemed to have more problems than later ones.

What's the rocker panels and cab corners looking like? Earlier than 05 the high pressure oil pumps were not as good and would wear, but everything wears to some extent. See how it starts and if it smokes at start up. Also ask if egr has been deleted.

Run.

I had 2 over 4 years and the only problem I had was the EGR valve. I do lots of idling and EGR valves don’t like that.

If the body is clean I think that’s an ok deal. Jmo

Do Not Do It.
Absolutely the biggest nightmare I ever owned was a 2003 6.0 Powerstroke.
Lots of fun to drive and it had a mean turbo whistle, but that truck left me sitting at least 6 different times. Turbo boots blown off because of a horrible design, FICM malfunctions, Oil Cooler, Oil Pumps, Injectors crapping out........massive bed rail rot, cab corners, and fenders.

Just an awful truck. I drove that thing all over to dealer lots looking to get rid of it and nobody would even be willing to trade it in. Made the truck darn near worthless. Finally found a small used truck dealer who traded it.

Terrible Truck.

I drive one for hauling cars. (6.0) what is the benefits of egr delete? I am not a diesel driver normally so don't know much about them although I am learning.