Rudi: The Bonneville car that Gale Banks ran was, as I recall, in the 250-260 mph range. The back seat was a tank - ice water intercooler. Fastest firebird so far, however, was Gary Eaker's, with Lingenfelter small block, twin turbo, nitrous oxide intercooled, 1200 hp, (No N2O inside). Speed 296. Several projects are still trying for a 300 mph 2-way. Charlie Iliff