Trust me... I'm not mad at all.
If I care about the car and potential originality, nothing is getting cut in the floor area or attached to it.
If I don't care and it's a hardcore, leaf spring, drag race set up, it's getting something similar to mopardudes setup. I run them inside the rear rails, cutting the front diagonal section out. If the car is getting a relocation kit, they go all the way to the relo boxes and are welded to the boxes, tying the rear suspension mount points solidly to the chassis.
Lots of ways to do things. I prefer the SBE approach... simple but effective. There is also, UBE, which I really try to stay away from but sometimes can't... Ugly but effective.
