Hi Tinman58, A TR-3 is a hard car to build a roll bar for. Does your car have a flat rear passenger seat area? Those look to be easy to install a rollbar in. My hot rod TR-3 is an early model and I haven't found a roll bar design that looks sturdy enough. I have two concerns, being hit from the side and rolling my car because of the skinny tires. I restored an installed a steel hardtop hoping that with it properly bolted in, it would give me some added protection. Roll bars get scuffed and banged up, and after a couple of years start to look scruffy. A light color scuffs realy stand out, Powder coating is cheap and very durrable, dark colors (black) are less noticable. Good Luck, Bill C. Mesa, Az