If Darth's idea doesn't work, then try to find a new one or just go with what you have.
Yellow plastic from a hot engine usually = fragile and brittle. Mine fell apart.
I think the door dimensions are the same but they were developed by different engineering departments. 1973 New Yorker has a 124" wheelbase vs 1970 Imperial has a 127" wheelbase. Even the front legroom is a little different (41.7 NY vs 41.9 Imp) and imp interior door skin has more...
