FYI - I found a site that still sells the Koyo non-race radiator that has the plastic endtanks (Model #A2450). It was $202.88 shipped from WA to me in FL. I just didn't see the need for me to purchase the race one for $250 more. If the stock one has lasted me 90K, I'm ok with having to buy a new one hopefully in another 90K. But I doubt I'll have my Subie that long
Here's the site. Excellent customer service and they shipped it out the same day and provided me with a tracking number per my request. I ordered it on Wednesday and it's scheduled to arrive on the 25th per UPS.
Here's the link
And the link
to the other Koyos they sell.