Spark Plug part numbers: Denso K20R-U, NGK BKR63YA

Hi all,
Having a hard time finding spark plugs. I've cross referenced Denso and NGK on their sites and it seems these are non-existent. The recommended plugs for 2000-2004 V8 are

$4 Denso K20R-U Denso 3122 Spark Plug

Denso K20R-U or NGK BKR63YA. I've checked at RockAuto and Summit and neither part numbers come up. I can order from Toyota and still get Denso K20-RU. Anybody have a different, current part number that can be used in place of OEM recommendations. Nothing other than Denso or NGK, please.

 

In cases like this, I go to the following places to look up the part number:

Denso: www.densoautoparts.com
NGK: https://ngksparkplugs.com/en/part-finder

NOTE: At NGK's site you may need to click 'Car/Truck/SUV' box to reveal the year/make/model selector.​

Given the owner's manual clearly lists those two brands as OEM-level replacements, Id' feel confidence about ordering the higher-end version of either.

 

PS - saving a brother a click:

I'd personally go Iridium, or at least the Platinum. Iridium is good for 60k IIRC, Platinum for half that.

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Thanks. Great advice as always.