Ok, I have heard a lot of information about both lockers and posi units for the rear of our trucks. I have some questions concerning both. For a locker- I know it's more off-road but I love the way my Fathers 78' Camaro drives with a locker. That thing doesn't miss a lick and seems like it still rides really well on the road despite the fact it is a locker. Doesn't have a ton of wheel hop but does have some. For a Posi unit- What's the difference between this and a locker? I am assuming that a Posi locks when needed and is unlocked when it's not? I have also heard you don't get the wheel hop you do of a locker? Let's hear some opinions on this. Not sure which to go with yet but almost leaning toward a locker because of the Price over a Posi unit. Something like a Power-Trax because I can get them for $259.00.