I recently acquired a 1999 Montero and will need a tow hitch and maybe a trailer brake. Plan to pull a small travel trailer (like an R-Pod) one day and utilize the hitch for other things like a bike rack and cargo tray also. I have seen both with just the 4 bolts that install to replace the tow hook and also know of the ones that bolt on to the bottom frame. I'd like to see and find out what you guys have and recommend. - Thanks!