 The Menard-Buick V6 engine used in 1996, however, was an updated powerplant from the 1995 version.In addition, the V-6 stock block engines (Buick-Menard) were allowed of boost at all races, instead of just at Indianapolis.During the CART era, V-6 stock blocks were only allowed at all races outside of Indy, which was a decided disadvantage and left the engine out of favor.