Where are you located?
What's your intended use?
What's your budget? Now increase it by 50-100%
What is your skill level, and willingness/ desire to do any/all of it yourself?
Are you able to source conversion parts of the shelf? Or will you need to source/fabricate custom parts?
If you need to...
I think you'd find it a pretty small number. Not at all a common thing to do
GM 6.5 V8 diesel was a popular conversion for a while too (still not big numbers being done) because people can't get past the cool factor of having a V8 diesel. Didn't matter that they are a heavy dog if an engine...
Japan and European markets had a "snow version" for cold climates. Part of the standard equipment was a roll down radiator blind to reduce airflow across the core.
What's your intended use of the vehicle?
A 1HD-FTE with manual trans would be my choice, hands down, IF money was no object.
In NA support and parts will be limited, so the cost will be high.
The engine and frame, suspension etc were engineered together so you're not compromising on balance...