Well, it's been years since I've had a 4runner and while cleaning out the garage due to I've got nothing to do (covid19), I found these in my tool box.
I must have bought these and put them away as they are still brand new.
Here is a link to what they look like - WabFab Disconnects
$50...
Vehicle looks good with better than average condition interior and exterior from all the ones we've looked at.
I know the 98 was the first year and this one appears to have the rear locker AND the center diff lock but I'm not sure how to be 100% certain.
Going to head over and spend some...
Those guys are delusional.
16k is not even remotely close.
Ask the dealer how long they have had that truck for sale. If they say anything less than 6 months they are lying.