Maybe I am the outcast but I like the front and would move the back forward so you didn't have to do the big comp cut. My preference would be to open up the back but keep the round corners so the body tub keeps it's shape.
4 link front Are you sure you want to go down this route??
I looked into this with Gasser, basically he told be it does not work on the front application!!The Mafia has so much flex bumpsteer is a constant battle, 4 link will only compound this.
Do I see a "FATBOY Giggletwin" or do my eyes deceive me?