451 stroker, cut the crank or block?

No need to cross bolt unless you plan on reving it 7500+RPM all the time.
I would have oil mods done waaay before cross bolting it.jmo

Girdle might be cheaper....maybe.

Yeah, that's what he said about the crossbolts, so figuring that money will be spent elsewhere on the truck. And oil mods are done on every rebuild aren't they? :-D