The kit Brodak sells is the first Nobler as such George Aldrich built.  That airplane was repaired and the plans drawn from it.  I understand that George built and flew a number of Chiefs, but I don't know if he did any modifications as such before the original Nobler.  As a side comment, I watched George build a Nobler in 1955.  He built it off the MAN 1952 plans. Given all the building without plans he did, that strikes me as an unusual thing to have seen.