My Noah uses SK16BGR11 plugs. Denso iridium equivalent is a VK20. Just check it at Autobacs and they are going for $40 per piece. Probably the most expensive piece of plug i will be getting. Any idea if there are other Auto parts shop that carries it? I have check a few near my work place and most don't carry and counter with IK series.
PM me or share if you can help thanks.. I understand RAV4 2.0 uses same stock plug as my Noah