The fan/housing finally arrived. Here are some close-up photos to document the restoration process and a weld repair to the housing (a small triangular piece is missing at the o.d. edge) https://pbase.com/9146gt/image/152227290. The assembly will be professionally restored balancing the finish so it will not have too much 'bling'. My goal is to keep it looking original. Yes, it is 226mm, see here https://pbase.com/9146gt/image/152227315 and also at the other end https://pbase.com/9146gt/image/152227318 (my camera was at a slight angle when I snapped this photo).

Difficult to make out, but this is the Porsche Casting Number: 901.106.103.00 https://pbase.com/9146gt/image/152227288

BTW, if you happen to know someone that has properly, correctly restored these fans, please let me know via email at; AJSERRANO at MSN dot COM - Thx!~