thanks for the info all. These are the standard EZ heads, not MW. This will be a street car with emphasis on torque. I have a 496 in my GTX with the eddy heads with some mild port and bowl work and the car is a monster (made about 650+ torque on the dyno.) I had these heads so I was looking to save some cash and use them. I don't want to limit myself to parts selection so MW size is out. What I don't know is if these heads will work as good for torque as the Eddy heads on the last build. Guess I could always sell them and use the Trick Flow. Again thanks.