Aurra nice car!! Will you convert it for saddle packs?
Anyway one thing I feel I should pass on as one 414M owner to another is to remove two of the four rear spacers for the upper shock mounts. This is so the shocks are straight up and down, and no tilted out like they are at the moment. It reduces some of the stress on the shocks.
With those pics you attached, have you been able to do a translation of the text?I'd like to know the reason for the change.
Again nice car!!