Want to see pictures of your full tubbed or backhalfed a body

So i have a 69 dart i'm thinking about tubbing and have a few questions.
1.can one simply relocate frame rails and continue extending the stock wheel wells?
2.What does the term "back half" really mean.
3.what is the best material to replace the frame rail material with.
I have the tools and ability to do the procedure just have never done it. I like to do things myself and this is definitely something i want to try.
a mini tub is something i though about but for the amount of power i plan on putting through the car i believe it would be my best interests to go further.
if anyone could post some pictures of what they did for their tub job and maybe their experiences with the process it would be greatly appreciated.