Remember that unpowered, wood-framed crate you and the neighbor kid built all those years ago? You know, the one with baby buggy wheels, no seat to speak of and a steering system consisting of a loop ...

Unless you're planning on steering your rod or custom in soap-box style with a length of 2x4 and some string, you're going to need either a steering box or a rack-and-pinion. Or you may want to ...