Horsepower limit for out of the box Edelbrock RPM heads

whoop dee do another 300 cfm non offset rocker small block head

Imo, judging by the popularity of their BB Mopar heads, and the impact they’ve had on that segment of the market...... I’d say TF knows exactly what they’re doing with the SB offering.
There’s always room for a product that’s the “best” in its class, which I expect they will be, especially at that price point.
You want to run a .700 lift solid roller in your SBM, and not have to figure out how to get that into a head with 1.800 or less installed height?
No problem, just order the correct part number and you get a head with roller springs and a 2” installed height.