What does the block have to do with NOS? Everything! Why in the world would you put NOS to a stock block? Do you actually think the stock pistons, rings, etc... can handle it? I think not. Yeah maybe for a short time, but it will sure put some serious wear and tear on the motor.

But what do i know.You seem to be the expert. So go on with your bad self. Hook it up.
Go PIMP your ride. lol