They had no choice but the inverted gull wing, to get the gear down those extra few inches.
In effect, they designed the airframe around the engine, much like the Jug.
In both cases, astounding success.
Sorry no pic, but check out the GBs for an engine with a pilot attached as an after thought.
https://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=384
Grizz