After seeing the damage done to the wrecked truck I bought from a roll-over, I would recommend fitting a roll bar even without the convertible mod. The only thing that stopped the guys' head from decorating the cab was the flimsy pressed channel cargo tie down rail on the tray. There isn't a great deal of structural integrity in these truck cabs. Don't forget that the seat belt hangers are shoulder height so you'll need to fit harnesses if you cut the top off the cabin. It would look cool though if it was fully decked out...