I have a set of new plugs to install. Are they already gapped to the right spec out of the box?

You are not supposed to gap iridium plugs -- unlike normal ones (used iridium on a motorcycle too -- same deal...)

OK, I did not know that. So they are gapped out of the box and good to go?

I installed a set right out the boix, they run great

good to go
OD
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Thanks :)

I'd still check the gap, just be careful and read about the procedures for gapping. Don't push down on the ground strap with a feeler gauge in.