Hi-Performance 350 Rebuild Kit with ALTO High Energy Friction Clutches This rebuild kit includes all of the High Energy Friction Plates, Steel Plates, Sealing Rings, Metal Clad Seals, Gaskets, Orings & Rubber Pistion Seals. This Transmission Kit is one we sell everyday to Transmission Shops, it fits the THM350 & THM350C 1969-up. So why not use what the professionals use! All these Kits have Sealing rings made by SPX/Filtran or Stellar, Clutches Manufactured by Alto(the Green High Energy) and Gasket Sets made Precision