I can't find bomb-bay dimensions for either the Do217 or He177. He111
had small internal cells and a max load of 2000Kg - it is possible that
the photograph of the SC2500 posed in front of an He111 is just that -
posed.

I have a photo somewhere of a 111 wearing an SC2500 under the wing, where they
also carried the V-1.

v/r
Gordon
====(A+C====
USN SAR

Its always better to lose -an- engine, not -the- engine.