So I took Hyperloop's "[Moving Nose] North America B-70 Valkyrie Bomber" and re-scaled it as far as possible and...

Yep... it still flies, even though it's 680 feet long.

It is too big to spawn in at Yeager Airport but it can be spawned in Wright Isles Runway and even the USS Beast (somehow). It just about fits on there and if you position correctly you can take off (literally moving 0.0001 nanometers forward places your nose past the carrier).

AG1 is activate drop-wings and streamline nose
AG2 is drop/fire all ordinance
AG3 is open bay doors

Can be a hard plane to control but still flies alright and with some practice you can land on the USS Beast.

Also, its colossal gun shreds everything.