You might enjoy hearing about the iron hemi heads with no pushrod holes in them, which were catalogued as stock replacement heads and yet were nowhere near being suitable for such an application

That was the only iron head available for years, and I heard only one complaint....from a guy building a street engine.

There have been times when the catalog was deliberately incorrect and was not telling the whole story. They did all kinds of stuff like that for super stock where they could. Racers have changed lifter locations for quite awhile.