are they still available 402 stroker engines

Why get so hung up on numbers? You're the only one who will know what the true displacement is? Tell everyone you built your dream 402, and no one will know.

It's like my buddy who has a nice 360 crate engine in his Demon. He gets upset because it's not a 340. I told him slap a 340 air cleaner on it, and no one will know. Life is too short to be sweating the displacement of your hobby car. Just my opinion.