So I got my shocks today. They look to be genuine. The part numbers don't match the ad though, and neither match what I have for OEM. However, it does come up as a compatible shock for my 4runner. I am debating contacting seller and seeing what they say about different part numbers.
It looks like the parts were sold to this Toyota dealership and they put them on ebay then.
All 4 shocks were $300 shipped with tax (they are located in the same state). Looks like he has relisted another set:
Genuine Toyota 1999 4Runner Front Struts Rear Shocks Strut Set OE | eBay
All packaging looks OEM with OEM plastic that hasn't been opened.
2015-11-04_02-50-17 by
RoyBelluomini, on Flickr
I emailed asking if he knew mileage. Shocks look beat. I would take a used spring over a used shock. It would be easier to just take the whole assembly to a place and have them swap springs (or shocks in my case) and then just do an easy swap at home and not deal with a suicide stick or down time.
My truck rides soft, but it has 160K miles. I think the taller softer springs on the tacoma have to do with the rear leaf springs. I can only assume they will assume more weight in the back of a truck which maybe softer springs up front would counteract it, whereas the 4runner will have more cargo closer to the front springs (passenger) which is why they are a bit stiffer...plus the inherit design of the springs in the back of the 4R which would not take as much weight as the leafs. That would require the fronts to take more of the load.
I am not a suspension engineer, but just a theory. I also would take moogs springs/heights with a grain of salt vs oem as far as capacities are concerned.
I likely will never be lifting this.