Adding A Suregrip

Adding a suregrip equalizes the traction to both wheels. In other words it sorta locks both rear wheels together. Chevy calls it posi-traction. Ford calls it traction-lok. Mopar calls it sure-grip. It's basically all the same. $425 for a suregrip. Depends if it's new or used. Used thats a little salty. New that's about what their going for.