Here's a photo of "Thumper" to compliment the fine post by brecklrl on the previous page ............. Quoted from www.autoextremist.com : "Daytona Beach, Florida, 1956. Vern Houle, Driver and Mechanic for Bill Stroppe Racing, standing beside "Thumper," the highly modified 1956 Mercury that ran 152 mph in the Factory Experimental Class at the NASCAR Daytona Beach Speed Weeks. It had a modified 391 CID Lincoln V8 engine with Hilborn fuel injection and Spalding ignition. It was also called the Jato-450-X."