First - before you buy anything. Check if there are leaks anywhere else in your truck that are spilling to your shocks.

Second - Toyota assigns a 1through 5 leak-stage rating system. If its 3 or below they wont replace it. There has to be some logic to this. Therefore, have them assess and tell you what stage it is.

Third - If you do need to change it, you have two options. Replace with like-for-like XREAS system. OR Rip it out and lift it with kings and you will be at same cost, more clearance and longer lasting shocks. I know this because I had the dealer replace 2 XREAS systems. Its garbage for longevity.

Fourth - if I have my old XREAS for sale :P if you want to make an offer