B&M Holeshot 2000 Torque Converter, 1965-91 GM TH400, 1968-81 TH350The HoleShot 2000 fits 1965 91 GM TH400, 425, 375 and 1968 81 TH350, 375B (not 350C) transmissions are for serious minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot 2000 converter is an excellent choice for vehicles with some performance engine modifications, particularly big cams that tend to reduce low end power and torque. The higher stall