Keep the hump bracket and the tree will be more stable. Fords have a nice wide flat hump for mounting stuff, but that bracket is more generic. Can you bend the wings out so they are more flat? Or at least the bottom 1 1/2" so the mount holes lay flat (without crazing the paint, not probable). You may have to clean it up and rattle can it again.
I don't know what you'll put on there, but I would shy away from screws to secure a tree, they just won't hold fast over time. I would bolt it down.
Here's how I do a one man install on a hump. First check top and bottom for clams. Usually the hump is safe except for drilling into the drive-line. Then get some 1/4-20" X 4" carriage bolts, 1/4" fender washers and 1/4-20" nylon stop nuts. Set your mount up as you like it and drill through the hump and the foil backed insulation (hint; drill reversed through the carpet, then go forward when you hit metal and you won't pull up any fuzz) and stick a bolt down as you go. Now dive underneath and stick on a fender washer and start the nut. Hold the bolt with vise grips (not too tight, you'll squish the threads) and work the nut up with an open end wrench. Turn and turn (and turn and turn) until all four bolts are tight. Now clamp the vise grips on the bolt about 1/2" from the nut. Rock it back and forth until it breaks off at the nut (the old bailing wire cut). Piece of cake and those stop nuts hold better than anything I've ever used.
Last edited by ramal121; 11-15-2011 at 8:26 PM..