X bar on C Pillar ?

I found this via Yahoo Auction Japan and wonder if it will fit HT81S, the part are listed for HT51S which is the 5 door variant of HT81S and the X bar look interesting.
The mounting point is rather interesting on the lower point which I not sure how they do it. The top mounting point is no doubt the rear seat belt point.
The picture shown is not the full set which only the X bar is mounted. The full set will have additional 2 vertical bar and 2 horizontal bar too.
Price ? JPY56,000 which is rather steep.
Material ? Stainless steel SUS304

Links to original post here :-
http://page7.auctions.yahoo.co.jp/jp/auction/g169853067