When I did my BB conversion, I bought a set of frame stands that came out of a 69 L78 Nova. The guy I got them from said they were the original mounts for the car. The part number stamped on them was for a Camaro, but they are excatley the same, as I did a side by side comparison with known original ones. So I would say Camaro and Nova are the same. The crossmember is different for the BB. It is the offset style. If you put all the BB parts in, you will have more clearance for the headers and the steering box.