while doing a Wikipedia speedrun, I came across the terms "multiplex" and "quintuplex." after a Google search I found some concept art (these things were never built) for a 2-8-8-8-8-2 quintuplex. so I made it in scratch! some features: -a normal cab and a facing forward cab at the front -an articulated boiler (two different boilers) -four sets of eight driving wheels (that's twice the number of driving wheels the UP 4014 "big boy" has) -according to one picture I saw on this, FOUR SMOKESTACKS, with one on the end of the tender I had to get creative with this because there's only sketches of these online so I couldn't get the wheels, colors, whistles, etc also, there wasnt enough room for the set of driving wheels on the tender or the tender smokestack so technically its a triplex and not a quintuplex apparently the quintuplex isn't the largest, there's a hexaplex with six sets of eight wheels, and this one has four.
