As tazz indicated, there's not a whole lot of difference between the CB175's & CL175's.
CL: high side exhaust & matching side covers, longer seat & matching tank, bellows fork tube, etc.
CB: dual low exhaust & matching side covers, shorter seat & matching tank, slider fork tubes, etc.
I've put a CL front end on my CB, and have mixed & matched seats & tanks (the CB tank has a more vertical slope on the rear than the CL). I'm thinking of a CL exhaust too.