Thin-wall spark plug socket?

I have a set of Hedman 78030 B-body headers on my low-deck, and the issues with #6 plug access are well known. I made a hole in my inner fender so at least I can get a socket on it. Since I don't have a thin forearm with two wrist joints, using a wrench from underneath is not practical. :rolleyes:

The problem is that the tube for #6 is very close to the spark plug base - and my 13/16" spark plug socket binds on the tube.

I've been googling for a 13/16" thin-wall, but almost all of them are thin-wall impact sockets which end up being the same OD. There are some wheel sockets which might work, but even with the plastic wheel protector sleeve removed, the OD is not really much thinner.

Any recommendations (even $nap-On if necessary)? Thanks.
Always a tough thing. If the socket is too thin then it won't be strong enough. Mac used to make some goofy looking sockets just for this application. I will see if I can come up with an example.