What is interesting is...if you look up the f13 6 series ski bag...it has the same part nbr as the ski bag used in the previous generation e63 6 series. But that generation (the e63) is offered with a retrofit kit....which uses the same part nbr as the regular ski bag. Hmmm.
So, why doesn't the f13 have a retrofit kit if the regular set-up is the same in both generations...and the part nbrs are the same?