My understanding was that mounting them straight up and down was optimal? I figure if I have to build new mounts they might as well be optimal. Obviously the moving out part is to clear the back brace that goes all the way to the axle housing flanges.

Q: Anybody ever see a 54" back brace for any rear end or am I back to the fab lab?

edit: A: Chassis Engineering will make a back brace any length per their web site.

Now for the next question: When do you step up to a fabricated housing? Is this more a function of weight savings , strength or some of each?