Very Nice, it looks alot like my 71 CB125s, except the 160 is cooler in every way. I love the tanks on those older hondas. You've got an extra 35cc's and its a twin to boot! Fun project.
Any ideas where you are going to find parts? I've had decent luck with ebay for my CL350, although my choices are much more slim for the 125. I will probably just have to get creative.
Looking forward to more!