I just went through this with a guy on my Golf Cart forum. Ford uses a viscous style LSD. Chevy uses the Auburn (LD), it is a Locking Differential with clogs instead of relying on plates and fluid to engage like the Ford LSD. My brother in law got a Detroit Lock, Auburn doesn't make a rear end for the Ford's from what every one has told us. He loves the DL and that is my next install before winter and after my new tires.