I couldn't find a shock tower guard anywhere, so I had to make my own. I started with a piece of 3/4 x 3/4 x 1/16 Aluminum Angle mounted on the back side of the shock tower with the other leg going forward over the top of the tower. It did require longer upper shock mount screws to accommodate the extra thickness. I actually ran like that for a little while, but the leading edge of the aluminum angle would dig in when I rolled, so I decided I needed more of an inverted ski on the front.
The black part on top is actually a Stampede/Rustler/Bandit stock front bumper turned upside-down - I had one in my parts box. It has the letters TRX molded in, which are upside-down and looked silly, so I put the T-bone racing sticker (that came with the front bumper) over them. Between the guard and the front bumper my lights are totally protected; between the guard and the rear wing the body is totally protected. That little front bumper is a $3 part, so perfect for a sacrificial piece. After many months mine is scuffed but still doing it's job.