Rank 27 documents the Howmet TX — the turbine-powered sports prototype that carried Continental Aviation and Howmet Corporation sponsorship to Le Mans 1968 as the most audacious American endurance experiment since the Chaparral programme. Built on a McKee chassis and powered by a Continental gas turbine, the TX wore white and dark blue livery with HOWMET and TURBINE EXPERIMENTAL callouts that read like aerospace briefing slides translated to Mulsanne speed. Number 7 did not win — turbines struggled with fuel consumption and lag through the Porsche Curves — but the car's presence forced scrutineers, journalists, and rival teams to reckon with a powerplant that sounded like nothing else in the paddock. Howmet's programme also contested Daytona and smaller sportscar events, proving that turbine endurance was not a one-race publicity stunt. Wallimilist renders the side-profile hero, blue arched frame, vertical sidebar with 1968 date, and HOWMET TURBINE CAR title exactly as the master PNG dictates — Endurance · Reserve kicker, Sarthe prototype arch lettering, and curator copy on La Sarthe folklore heritage.