Ford 7.3L Power Stroke (1999-2003) :: F250 - Modify Dash To Accept A Deeper Head Unit?

I picked up a 1999 F-250 Super Duty with the extended cab (not the full crew cab), and have been working on restoring, upgrading, and improving it. It is in great mechanical shape, but needed cosmetic work, replacement of the mirrors and some lenses, and updating to modern tech. I've got all the key wiring in place to install a new in-dash PC head unit with backup camera and a new sub and amp to improve the audio. The problem I'm working on right now is that the head unit is a bit too deep for the double-din slot in the dash.

I could let it stick out 1.5-2" or so and trim it out, but to be honest, I'm not keen on that at all. I think it looks terrible, and I've gone to a ton of trouble already for a nice clean, sleek install and would like to keep it that way.

I've also looked and whether the screen might be divorced from the main body, or the chassis shortened, but neither of those is going to work.

I've considered that there may be someone who makes custom dashes that stick out further for situations like this, effectively deepening the stereo pocket by adding space at the front. If there is though, I can't find them.

Finally, and what seems the most likely, is that I would need to modify/reroute the air duct, and notch out the steel tube at the back of the cavity, to gain an extra 2-3" of depth.