Since it was only the nose in front of cockpit tub that was different I can't see how there would have been. Also the way the aircraft was put together would make this tricky, though not impossible.
The Me 262 A-2/U2 prototype, V11, (Wnr. 110555, coded V555) had a bomb aiming position in its nose with a good view down, but that's a rather different beast.
Cheers
Steve