[Nick Beale]

Graham, I could be completely wrong but I thought that all you needed if you removed the Bola was a new rectangular floor hatch and a fairing for the protruding section of the bomb sight. The Bola of a Ju 88 looks like it was a bolt-on rather than integral to the fuselage structure and that it was only accessible inside the aircraft through the hatch aperture.

They made a much neater job of it on the Ju 188!