408 stroker head gasket recommendation

At the time I assumed I’d be using a Magnum block but came across a 1973 360 block that was already machined (took it to a machine shop to have thoroughly checked). I already had the rockers (ordered with the TF heads) so I decided to go with the LA block. I do have the oil through lifters. I’ll measure the pushrod length needed after the heads are on.

Ah makes total sense now. Personally, I’d tap the block and block off the oil passages on the deck. It’s reversible if you ever want to switch. I wouldn’t want to rely on a head gasket to seal that oil passage.