Here are some size pics I have collected. The first is comparing the Nag1 (center) to a 727 and 545. The second and third are the Nag1 vs. the 8 speed. I've heard of the Nag1 fitting in an ebody with just a little "persuasion" to the tunnel with a hammer. I don't know if the 8 speed will fit with that same "persuasion".