I have a Gen 6 454 in my 69 Camaro. I have a Moroso pan, a AGR PS gear box. (Std). I am installing new Headman headers and they are supposed to fit. The drivers header hits the gear box. In addition my pan is resting on the crossframe. As luck would have it another 69 pulled in and it has a new 502 in it. It has the same pan and it is resting 3/8 inch off the cross frame. It looks like the mount and tower are much taller. I went and bought a new tall MM but it is the same as I have. IT looks like the frame mount is taller. I am 95% sure I have the BBC frame towers. Which towers are taller?