Vintage tractor Pullin'

I have watched tractor pulling a couple of times, but it is never as cool as watching a vintage tractor pull in live and in person. I was amazed at how well these old tractors pull, they will just keep popping until they spin out. the coolest tractor I saw at the pull I went to was an old souped up McCormick W9, it had dual exhaust and a custom intake, there were no decals, it was pure red and had really wide rear tires, this thing really pulled well, the only thing that beat it was an old International crawler.