All I did was sand down the nub where the running boards are hinged, allowing them to swing up. I also transformed the doors in a different way, down instead of up. Warning: At least one person has cracked the ball-joints on his SS doing the alternate door transformation. Mine is just fine and i've transformed it this way a dozen times. I don't know what I am doing differently, so I can't offer any advice. The running board mod is pretty much just a little sanding and that's it.