for sale a differential for a 1964-1977 Corvette with independent rear suspension. part number 3871375 posi trac with looks like 3.55 or 3.70 gear ratio. tight and smooth was functioning fine when removed. has pinion yolk and axle yolks included. the diff cover alone goes for $250 will sell $450 text to 678 557 1294 jimfoxmail@gmail.com