Well, after almost 19 years and 176k+ miles, my lower shock absorber bushings in the front seem to be just about gone. The right front is now making some metal-to-metal contact squeaks. I'm trying to keep this rig very well-maintained for at least two more years. But I'm not really looking to upgrade it at this point. I'm considering either Bilstein 5100s at all four corners, or Bilstein 4600s, which is what came with it from the factory. Obviously the stock Bilsteins have been very reliable. If I go with the 5100s, I'll probably put them on the second or third notch. Has anyone had any problems with the 5100s? The way the ride height adjusts seems a little Mickey Mouse to me. An extra inch or two of clearance up front would be nice, especially since I'm sure my stock coils are sagging at least a little bit. But what I really want is to maintain maximum dependability. Are there any other similar options I should be looking at? Old Man Emu maybe? They don't have anything for Gen 1 Tundras on their website, but maybe Tacoma-specific stuff would work?