You have to be care full with the 2.3 valve. Not all pistons have the clearance needed for them. They are decent heads and would work well on your engine.
Here are the Brodix heads from Summit. The price is PER head. They are available in 110cc also but would recommend getting the 119cc chamber. Thats pretty much the standard these days for bbc heads.
http://www.summitracing.com/search/b...g&autoview=SKU
You can get away with more compression with aluminum heads than iron heads but the iron stuff will make good power too. You just need to match the heads with everything else.