Euclid TC-12 Bulldozer.
The Euclid TC12 entered the dozer market back in 1955 and featured a somewhat unusual design it featured twin GM 6-71 engines which were mounted on each side of a split frame they produced a combined total of 402- 425hp depending on year of manufacture. Each engine actually drove one track through its own powershift transmission which made them a very powerful and fast dozer. At the time of its launch the TC12 was the largest and at 40 tons in weight by far the heaviest dozer on the market and as you will hear in the video below that features another restored model, this time in the USA.
https://www.earthmoversmagazine.co.uk/digger-man/view,euclid-tc12-classic-dozer-in-action_584.htm