What do you guys think of the speedmaster bare aluminum heads

It looks like they are just "aluminum heads" nothing more. I would like to see some ported and how much material is available for some nice work. Closed chambers can be found on some numbers of iron heads so unless you have domed pistons to take advantage of the compression without detonation issues they are simply aluminum heads. May be I should buy one, send to R&J for some work and have it copied..