Hi
Mezzo spefic bits
1) Folding stem. Might be possible to ulitise something else?
2) Rear frame clip
3) Chain catcher
4) Front wheel clip
5) Fork and front mudguard Wheel quick release is montage?
6) Rack
7) Seatpost clamp
8) Seatpost
Only really see a need to possibly replace 1 ,3 ,4,7and 8
Problems with 1,2,3and 4 usually due to adjustment required.
Rack can thrOw off its alley key bolts so locklite them,generic bolts.
I use an alternative for the seatpost, sure alternaites possible for clamp.
Else airmail from uk or look For Ori
You can fit whatever hud you want, one person, boston blackie, fitted a nexus 8 and was very pleased with. I hAve Fitted dual drives on my bikes (27 speed).
I am based in UK and have bought some spares so I don't use bike shops very often for my mezzo's.