I have the same year GX with 130k miles and i have run into the exact same issue. I have very limited experience with working on cars so I have contacted a few different shops to try and figure out what all this swap would entail. My end goal is not a "lift" but i would not be opposed to a slightly higher ride for clearance. Ive read a lot of different threads on modifying the suspension and there is a lot of different ideas out there. Your solution is the most similar to what i was wanting to do. Can you go into a little more detail about the parts used and the ride you have achieved? Also any issues you encountered when making the swap? Thanks.