A garage door panel runs well over a hundred pounds on most double-door setups, and the spring holding that weight is under enough tension to break bones if it lets go wrong. That part isn't a DIY job, full stop, regardless of the house's age.
Where Norwalk's older stock raises the stakes a little further: if your opening doesn't match a standard rough opening - which is common in houses from this era - a new door bought off a shelf measurement won't seat right, and forcing it in creates a door that binds, drops, or won't seal. Measuring your own opening correctly before you order anything is worth doing yourself. Hanging the door and setting the spring tension is not.
Our limitation here is the same one we'd give anyone: we don't do structural carpentry to widen or reframe an opening. If your jamb needs that kind of rebuild, that's a separate trade, and we'll tell you so rather than take the job and improvise.