What an unnecessary drama.
All the new extras on the modified cars do NOT have any collisions or weight parameteres.
They are merely visual - think of it like stickers (except they're 3D).
They don't change the car center of mass, weight, etc. Like the massive wing on the Sultan RS - it only looks big, the collision is still the same as the original spoiler.
As for the photos, dropbox stopped supporting direct links.
This will hopefully be fixed tomorrow, and a new update is also coming.
This update doesn't have as many new things as the one before, but trust me, it is still worth it!