So, this post went quite far but, we did not see much more pictures, nor hear any sound. I felt obliged as regards sound
Here is a very small extract, bike at idle, and rev up to 3k.
My Zard is Euro5 (so catalyzer AND baffles).
https://soundcloud.com/theunicorn-shinkan%2Fzard%2Fs-fYMPnbt7Nzs
Sorry, pretty much never recorded anything before.
Recorded bike on side stand at rest in an open shelter (walls + ceiling wood/plaster, floor concrete, opened to outdoor), from a camera mic standing on floor 2m behind bike outdoor (nearer saturated the mic or app).
The recording app (default phone one) unfortunately adapted/normalized sound gain while recording (nothing I can do against that), so idle is not louder than reving (which is obivously not the case in real life...).
Apart from that, the sound is pretty accurate (recorded range is 35Hz to somewhere at 18Khz, there is a lot below 300Hz, so you have to use speakers/earphones that can render that... or what SoundCloud compression left of it).