enclosed nuts on side-rear TR6 bumpers

["Carl Huppert" <chuppert@hesinet.com>]

The lamely constructed, boxed-in nut on the side-rear bumper of the TR6
ripped away while removing my bumper (thanks east coast rust) and I'd like
to secure it back properly.  It's impossible to get a finger/wrench back
there to put a nut on.  Anyone found a way around this short of getting a
new bumper?

Carl Huppert