We did a lot of motorhomes with the open chamber heads and helped design the KB quench dome piston to go with them, and the cams
Today I'd do that or use a closed chamber head with a dish
Interesting that the Magnum and Edelbrock take a different piston with quench on the spark plug side
prior to the KB's we had custom forged pistons made for both small and B/RB and we welded up some heads- not a big seller
as said by many and me included open chamber can make more top end HP but you do not want to "LUG" them and they are iffy on regular gas