W2 valve size recommendations

Looking at your valve to rocker arm positioning i can see you likely had the lower pedestal height. There are rocker arm systems made for econo W2 Heads specifically by Harland Sharp and T&D which may work for the lower pedestal heads.

I have mocked up the Mopar blue rockers on my tall pedestal heads and the relationship of roller to valve tip look pretty good.

A different rocker set up or milling the pedestals - there are options for you to complete your heads.

Keep us posted. Good thread.