Rootes Motors was the company that built the Sunbeam Tiger and had a Ford 260 V8. When Chrysler bought them out they tried to squeeze the 273 in it but was too wide. So they discontinued the build. A real shame. My buddy put a Boss 302 in one and drove it for a while. He sold it to a young guy and sadly he and his fiancé were heading North and hit a hwy tractor head on while attempting to pass a stretch of cars. They were killed instantly. They figure he was going at least 100mph when they hit.