Inertial reel shoulder harness - retro fit?

Casey Wilson wrote:
Granted that engine failure (stopping the whirly thing up front) is
uncommon it happens often enough that we drill on it in primary training,
flight reviews, and.... And every POH I've seen, certainly not all by a
long shot, has a check list for engine failure in various scenarios. If
something impedes me performing the check list ... Yeah, I worry about it.
Or did I miss your point, Newps?

Yes, you did. My point was some people worry about the inertia reel
itself failing.