W2 head installed valve spring height

They were “parts” in the MP catalog.

This one is P4452790
The small block section is about 140 pages.

Just take the springs to someone with a spring tester and check them(with a suitable retainer to properly preload the inner spring).
If you’re comfortable with the loads you’ll get with those springs on that cam..... then run em.

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They’re out of print, and I’m not saying you should get one....... but if you wanted one:
Mopar Engines P5249010 Racing Mods V8, V6, I6 - 8th ed, Chrysler Dodge Plymouth | eBay