Hi,
I'd just go with the Plugs, but be mindful of leaky Spark Plug Tubes. Thexse use two different sized 'O' rings on either end. I wouldn't bother picking them up ahead of time because in all likelyhood, they'll be OK. Just be sure he runs a finger or rag in the tubes to see if any Oil comes out on it...
Happy Motoring!... Jim'99
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