I wouldn't worry about this Ryan, I'd sat in 3 original GT40s before I even noticed itGreat photos James. It’s an angle you almost never see of these cars.
my dash, which I presume is ex KVA still has the angled front edge on top to meet the bottom of the windscreen frame but the lower edge is missing. Still trying to decide what I will do in that area. Given that I am quite tall some extra knee clearance would be nice.