I am also considering chopping the top, has anyone done that to this? It looks pretty straight forward. I can't believe how thin the plastic is, almost to the point of being flimsy.
The easiest way to chop a '32 closed car is to keep the B-pillars lined up and bring the roof straight down, while slightly leaning the A-pillars (windshield pillars) BACK to correct the alignment, and slightly reworking / filling the mis-alignment of the C-pillars. Though this is a '32 coupe, if you take about 3.5 scale inches out of the Vicky, your pillars will end up with about this much mis-alignment.
You can see that a gentle tweeking of the windshield pillars will correct the alignment without having to resort to cutting the roof into sections, and reshaping of the rear quarter pillars will accomplish the same thing on that end. Again, bring the B-pillars STRAIGHT DOWN, and reshape the front and rears. The Vicky will be a little worse at the rear than this coupe, but not too horribly much. I just looked at a '32 Vicky body of my own to verify this.