Well, I'm having trouble with denting the headers. I tend to be a wuss when it comes to hitting things as sometimes I don't know my own strength and may break something if I try to hard. How hard can I hit this thing? Right now I'm using a punch with a flat end on it (microfiber wrapped around the edge) and a hammer. This is all inside the car as I just realized the headers don't have hex-head bolts but the 12-point or sided bolt (I don't remember what they're called) and I don't have those sockets on hand (another thing for the wish list). My last resort is to undo the motor mounts and move the engine.