Liking the 3D fix so far.
Might their be any clues to if any bird(s) in the megapack could have Altitude or Tropical Intakes fitted, since they don't even require animation like the DB ones?
According to Fw In Action (ISBN 0-89747-404-X) and mentions in other books tney were installed commonly when mission (i.e; high alt incept' or high alt escort), weather/season & airfield environment requierd them. A-3's to A-5's were more likely to have Altitude kit if fitted for Western Front and Tropicals on the Eastern & African Fronts.
Regulaly F-2's & F-3's were fitted with Trop's in the field, to the point that although not factory equipped, the they have been included as an identifing mark of early F's.
Pre 190D's used Trop's in the dusty areas of the Eastern Front, Med & Africa, they weren't offical 'repair/field kits' as such, but 'options', and so modelkit companies/makers seen to ignored them for the shiney weapons kit upgrades to sell, and be nearly all 3view drawings - and era photographers (ho'd want to take a pic of their beloved A/C in dust/sand season/storm or after a hot grueling mission eh).
Once BMW engine developments increased power at altitude, increasing allied air supperiority, reliabilty vs average A/C lifespan & retreating into closer to the reiche environmentals meant later built A/C weren't as often fitted with them. Older models like 2's, 3's & A-5's soldiering on in some axis allies forces and german 2nd line, night harassment/nachtjabo, high alt recon & training roles alledgedly still had them.
I am only intending to enquire, not request par-ce.