What you are saying doesn't necessarily make sense. None of the issues that you are having have any bearing whatsoever to the diesel engine. It's kind of like "I'm having a lot of problems at work, so I'm going to go home and kick the dog & divorce my wife".
The issues are with the front end and transmission which would be the exact same with a gas engine, unless you went with a heavy duty 3500 and ordered it with the Aisin transmission. That however comes with a diesel engine.
There is always the possibility of issues with any model or brand of truck. I previously had a Ram 2500 with the Cummins diesel and absolutely loved it.
I moved to a Ford because I needed 4 wheel drive, and the cabin is much larger and more comfortable inside for my family, but my F350 is awesome also. In an ideal world, it would be great to order trucks like the big rigs where you could specify individual components, Then I would get the Ford body, Cummins engine, and Allison transmission.
You would be better served if you identified what is most important to you for a vehicle and went from there. Again, the diesel engine is not the source of your problems, but if you would rather have gas, then go for it.
