One Pile Driven style Base is included in the kit, with magnets to fit into the base and OHLE structure. In general mast spacing is likely to be closer together at junctions and on sharper curves.The Peco wires are available in the following lengths 200mm, 260mm, 340mm, 380mm and 500mm, so if you are fitting wires then it makes sense to space your masts to suit the Peco wire lengths.