I have The Athena's that Rob ports and calls his, they are drag ported and rock! The only reason I got them is because I got a smokin deal on them with pistons, domes and a head. I once called RDZ to have some porting done and he quoted me at $1000 for some stock cyls drag ported, so I'm not sure what you would be spending to have your Athena's done. Call around and get quotes from all the site sponsors, you can tell just by talking to them who you will want to do business with. Call RDZ also!