mjb: no you could put a camera on the nose, however you would have to bend the tube upwards to retain ground clearance, 120's are known to rub there noses in the dirt now and again. also you would need to relocate the pitot static as the gimbal would shadow the existing location. an aft counterbalance would probably be required. all that said and the very limited market for that type of install would just say go with side mount and narrow the focus down, not the best camera location for your style of work but proven certified alternative
dr