What is your dream car?

Mine is a 2019 Ford F-350, King Ranch, crew cab, 6.7L diesel engine

Added (1). Tomalochk, your right it's actually around $70k

How much money to make my truck 4x4?

I have a 1973, Ford Ranger xlt. It's a f-350 crew cab.
I have a 1978 regular cab that is 4x4.
If I wanted to make the crew cab 4x4, mostly using the 1978, how much (estimate) should it cost me?

Should I avoid buying a ford 6.0 power stroke?

I have my eyes set on a 2006 Ford F-250 6.0 diseal. I really like it great condition and low miles. But my dad who is a mechanic says the 6.0 is one of the worst engines ever made and avoid them at all costs. Is this true, and should I avoid buying this truck. What issues do the 6.0 have and is it unreliable. If so what trucks should I look at instead

What should I change my diff gears to for highway use?

I have a old 1971 ford f250, witch is great other then the gearing is way to low. On the highway going about 55 the rpm is around 3200 and at 80 I think its 4000-4500 when its in 4th gear. I don't even use 1st gear at all cus its so slow. The diff ratio right now is a 4:1 I would like to be at 2200 rpm at 80mph in 4th gear but can't find a clear answer as to what I should change the ratio to.

Added (1). I typed the question a bit fast, I mean what would work best that well allow me to travel on the freeway comfortably.

Added (2). sorry the ratio is also 3.25

Ford F250 6.0L diesel fuel filter issues?

Hello so my question is why when i change my fuel filters does my truck just flat out reject both of them sometimes? I always use ford filters i also always make sure to get all the air out of the system before i crank the truck, so what's up? Do i have a bigger problem i'm not aware of?