One of my most viewed, recommended and relevant versus videos on youtube! Right after the Great Race To Ogden with the UP Big Boy 4014, I figured it was the perfect time to help promote the PRR T-1 Trust. Naysayers said the UP 4014, Santa Fe 2926 and C&O 2716 could not be done. They were wrong. The 60163 Tornado is a new build and runs successfully. The Duke of Gloucester 71000 and BR Standard Class 5 73129 use Caprotti gear and run successfully. Therefore, the 5550 can be done as well.