Rtt
A hard shell RTT install is dependent on the kind of roof rack you have. I would not install one on the stock T4R roof rack. I have an FJ cruiser also, and had a roof rack custom built in anticipation of installing a hard shell RTT. You need a flat wide surface to bolt a RTT to. I think the stock RR on my T4R is just about worthless compared to the custom unit I had made for the FJ.