Mock oil-tank was made from miniature mailbox that I found. Air cleaner cover is, well, a tuna fish can.

Are yougonna paint those mount red ? Also red electrical tape for that wire looks like it may get pinched between the box & fender

Re the mounting straps: I dunno, I think I like them standing out. Still thinking about it.

Re the wires: s'aright, there's a quarter inch of space between the box & the fender. Although they might look a bit more tidy if I tape or heat-shrink-tube them together.