Generally, you can drill and tap for a #2-56 flathead or ovalhead screw. Using a flat or oval head screw will automatically center the truck. While you may use self-tapping screws, that presents potential for being off-center. Use a tiny dab of blue threadloc to keep the screw from loosening, and you're all set. (just a tiny dab, so you can remove the screw when you want to...)