your truck, build it like you want. However be practical. While something may be possible, it may not be practical.
For example, weigh out a complete frame swap vs the component swap. determine the time and cost to perform body work vs a major amount of fabrication. Then make your decision knowing you have covered all the bases.
Also, remember Money cubed and time squared. That is it will cost you 3 times what you anticipate in cash and 4 times longer than you think.
it sounds like your mind is set on component swap, then look at the two frames side by side. determine what you need to fabricate from scratch and what you can transfer from one frame to the other. Then map out the plan and follow it.
Either way, enjoy yourself.
