I used to have a '76 Blazer, and bought a AGR pump and box for it. The '76 is gone but now I have a '79. Online the boxes are for '68-'76 and '77-'79. What were the differences? Can I still use it? If not it will be for sale soon (or if it is going to be a pain to get whatever I need to adapt the two). Also, this is from the listing: "S Box - S Series Designed for the Off-road enthusiast who wants to reduce their steering effort. These steering boxes are manufactured with light valving and 20:1 ratio to obtain maximum power assist with less effort from the driver. NOTE: This steering gear is not recommended for short wheel base vehicles at highway speeds. This box turns very easily and over correction can occur in emergency maneuvers." This may sounds stupid, but they don't consider a Blazer a short wheelbase vehicle do they? I wasn't sure if they were talking about a Jeep in relation to a real truck (Blazer/Pickup) or if they are talking about a Blazer in relation to a Pickup.