Some of those plugs wont fit, others have different heat ranges. The OEM number is 412 or RC12LYC. You can go to championsparkplugs.com and scroll down to the learning center and find "charts & tools and a link to the champion spark plug numbering system and see what all those letters/numbers mean.
So are there only 4 per box and you need 6? At only $12 for 6 new plugs ($2/ea at Autozone, Advance does not sell them), correct ones are Champion Copper RC12LYC as jnicewan pointed out, believe I'd sell those or give them away. It's not worth having mixed plugs or changing heat ranges for $12.