Kevin, how about a section of roof off a similar New Yorker/300/Newport the majority of the roof is gonna be the same, the support structure would be the same.. I had a front header bow for my B body vert that was rusty, everyone that look thought is was gonna be a huge deal to fix.. I cut the front 8" off a similar body style 4 door & worked that into the final shape, it turned out great & only took about a day..