You have to approach the project as a "do what it takes" rather than "must preserve the Mopar". If you do what it takes then you cut the floor for extra head room and you cut the floor for more exhaust room and put tubs in it for more wheel room and stuff like that. Most Mopar guys won't cut stuff up which is why the projects take so long and cost so much. If you're willing to just cut the stuff up and move it around then you can make the car work for you.

Just don't be dumb about it like this guy.