I am just contemplating fitting the inner trunk light. Measurements are pretty close and hopefully they are exact or unnoticeable!
Really hope they fit because they will look bette
than the existing ones which don't really go that well with the outside ones, in my opinion.
The outer lights, as you said, are more round and won't fit.

The mirrors should be easy to adapt. Thinking about that too. Like the M3, M4 type but much easier for me to buy used and modify these.
AliExpress has a good choice of E70 and E53 with M3 look. Have a look there..

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2003 BMW X5 E53 3.0D-Auto, Sportpack,full extras.
Oxford green/Leder Dakota interior.
56, 875miles @24th October 2024
Heavily OE modded,including full facelift grill install.4.6is body kit,wheels,exhaust tips and ext.fender flares
Non OE mods.Depo "custom" Angel eye headlights.