..arrived in the mail today! There is a noticeable difference between this one and the old nose. As far as I can see the problem with the old one is that the the top portion of it becomes too narrow towards the rear end, this being continued down the sides. At the front, it appears to be identical to the new one. I haven't tried the fit yet, but I will soon enough. The quality of the part looks great, just make sure that it's thoroghly washed - my sample is covered with mold release. A few panel lines are a bit faint but these are towards the rear of the part and would most likely need to be repaired or even restored after gluing/sanding anyway so that's no problem.
I had never imagined such customer service, both from MDC and from Vasko at Warbirds! All of my ten thumbs up for them
Edit: A few (lousy) pics of the two, side-by-side: