Interesting. All teams who opted for the big undercuts 'simply' raised their radiators, Alpine did that too, but kept the old outwashy undercut.
The inside of the undercut looks emptier too. It seems Alpine moved 2 of the 3 engine water and gas tanks elsewhere.
So why would you redesign & raise the rads like this & create so much empty space underneath them (and a bit of space in front) if not to create a bigger undercut..?
A first glimpse of the internal bodywork, which looks more substantial & seems to cover everything, right down to the rear inboard suspension.