After Rocky Mountain Construction created Topper Track, they went on to develop I-Box steel track. By 2017, they had changed seven wood coasters into steel coasters with the addition of the I-Box retrack to the The New Texas Giant (formerly Texas Giant) at Six Flags Over Texas, Iron Rattler (formerly Rattler) at Six Flags Fiesta Texas, Medusa Steel Coaster (formerly Medusa at Six Flags Mexico, Twisted Colossus (formerly Colossus) at Six Flags Magic Mountain, Wicked Cyclone (formerly Cyclone) at Six Flags New England, Storm Chaser (formerly Twisted Twins) at Kentucky Kingdom, and Joker (formerly Roar) at Six Flags Discovery Kingdom.
©2017 by Joel A. Rogers.