those are both great sites - for the search i did they seem identical, including prices. wonder if it's two online of the same outfit.
got a 76 750 k since april - first bike in thirty years (after a misspent youth very absorbed in motorcycles) and the more i work on it, the more i like it. but - with all respect to the honda engineers, the 8mm holes in those brake caliper bolts seem slightly shallow and loose-fitting, on my bike anyway. a minor complaint. i've had the caliper apart and back together, but while un-torquing and torquing the bolt i felt i was not far from rounding out its inside