Tyler,
You can be the guinea pig. If you get the extrude hone done, let us know where you went, how much it flowed before and after (in CFM), and how much material (weight in grams) were removed. Most importantly, dyno test it before and after. If you do these things, you will be everybody's new best friend.
Nathan
P.S. This is the kind of research those searching for the NA 12s need.
You can be the guinea pig. If you get the extrude hone done, let us know where you went, how much it flowed before and after (in CFM), and how much material (weight in grams) were removed. Most importantly, dyno test it before and after. If you do these things, you will be everybody's new best friend.
Nathan
P.S. This is the kind of research those searching for the NA 12s need.