I looked at all the pics of the CB450 and notice there is no battery...must just run off the alt/mag? Unless he's hidden it in the seat cowling (which would be pretty cool but put a chunk of weight up high).
Also note on the silver CB450 he used the passenger peg location for his rear sets...pretty inexpensive way to do that. Fabbing the brake linkage is doable since its rod actuated drum rear. Mybe an old dirtbike brake pedal? I may have some old parts off a Buell that you could use for shifter linkage...the lever pivots on the mounting bolt of the footpeg. Lemme know and I'll shoot some pics for you.
Tim...with your fab expertise there is a cottaage industry with rear set kits, billet pegs, clip-ons and bars like clipons that mount to a plate that bolts to the upper triple tree. E.g., a set of rear sets in aluminum for a Buell is $250-300 or so and suprisingly simple. And replica aluminum tanks go for $900+.
Oh yeah...don't discard the stock mufflers. Look pretty solid wiyth only suface rust. Should be able to unload them on evilBay to a restorer. The sissy bar and twisted steel handle bars are tru period corrrect custom items for the rat bike crowd
