Edelbrock Victor Series Race Cylinder Heads or Trick Flow cylinder heads
I was under the impression the victor sb heads are prone to many issues and stear clear of them.
Trickflow or Edelbrock rpm would be the safer bet.
I run the Indy 360-1s on my sb 418 but they love rpm. Street and high winding rpm don't go too well together.
W2 and w5 are basically Indy 360-1s. W5 has issues so stay away.
W2 are cast iron
That's my .02 and I am not a professional.