Performance Online (POL) High Performance Tie Rod Adjusting Sleeves, (pair). POL is proud to introduce this new member to their growing performance suspension product line. Available for 1955-70 Full size cars, 1963-88 GM A-body, 1963-79 Nova, 1967-92 F-Body, 1963-72 Chevy/GMC trucks. A great way to improve the strength of your steering system and add a high tech look. These high strength tie rod adjusting sleeves allow for precision alignment settings and reduce the chance of slippage found in traditional clamp type sleeves by incorporating jam nuts!