⭕ This is a very rare Paxton Blue Twin Supercharger Kit. The kits are for 1964 1/2 to 1970, 260ci to 302W-equipped mustang and shelby small-block V-8 engines! This was made for you guys making a replica Shelby that want twice the HP! All parts will be brand new, you will receive 2 Paxton Head Units with Carol Shelby stickers, Crank Pulley, Tensioner, 2 Inlet Pipes, 2 Outlet Pipes, 2 Air Boxes, 2 Belts, Bolts, FMU, and Installation Manual. Adds 10-14 PSI Safely! For choosing the right blower cam, you want the lobe seperation to be between 110 and 112 to maximized the blowers potential. You will need a factory Ford In Line Dual Quad Intake or Top Quality Reproduction (Ex: Blue Thunder, Edelbrock, Holley or Weiand) along with a pair of 600CFM Holley Carbs. We recommend a set of 600CFMs vacuum secondary Holley Carbs for Street applications or a set of 600-660CFM Holley Center Squirters for Race Setups. With the first setup you will double your HP and with the second one you will add 60-75% more HP! And if you want, the head unit can be Polished, White or Blue (The ORIGINALS are BLUE)!