No not at all your gas v8 about 600 pounds the 6cyl cummins about 2000 pounds so your frame is to weak your suspension is also to weak and then there is your engines computer that would have to be changed out along with the wiring from the computer to the new engine not to mention transmission and rear end and exhaust

Would be a big project, for sure. You'd have to upgrade the suspension, cooling, & replace the fuel system. Plus might need a tranny chage too.

Possible, yes. Practical, no. You'd be better off to buy a new truck with the engine you want. .

It is possible, but difficult. Lots of man hours, and you would need the whole Cummins truck for parts.

Not without replacing the suspension too. That engine is way too heavy.