034
292
492
041x
All of those can be pretty decent after some work is done by someone who knows what they are doing with them.
I thinkl this guy will still do cast heads. He is really reasonable and the work is pretty good too. He has done some stuff for Nostalgia Racing already like the Jungle Jim Lieberman Blue Vega, some front engine dragsters etc.
Try
Jerry Killian at
http://www.killiansportingservice.com/
Possibly you can still get Larry Meaux to do cast heads.
http://www.maxracesoftware.com/
Ed