Fairbanks C4 C-4Transmission TransAction Kit Performance Shift Kit 1970-UP Part No. A26171 Offers 3 levels of Performance: 1. Heavy Duty 2. Street & Strip 3. Full Competition Transforms your automatic into a true performance transmission! * Offers super positive shifts * Retains passing gear * Adjustable shift points * Eliminates excessive shift overlap 1. This TransAction kit will work on 6 and 8 cylinder engines with both large and small bell housings. 2. Delivers full manual control at any speed which increases the overall performance level.