In the stock full class or production, you cannot change the engine, transmission etc. their are minimal exceptions and the manufacture must produce 5k units a year. I personally wouldn’t run a supercharger even if it was legal. I am sure I would have finished less races from a reliability side. I worked along side TRD for many years and they pulled these chargers due to several motor failures. The 5.7 and 4.0 are two motors I would leave alone in desert racing, especially the Baja 1000.