Got it, that's good. Perhaps a distributor wrench might have worked also the big tool trucks (snap~on, mac etc.) would have something that would work, box end crows foot or similar.
I found nothing but a socket would fit around it - open end and dist wrench which i have were all to thick and angle doesnt work. The wrench in my pic is laying on a small raised ridge as well so you cant try and get even partially on a couple flats without tipping the wrench significantly.
1968 Fbird Conv - Well its mostly there. 8) - mine 2015 1979 Camaro RS - Summer DD - mine 2013 Now where did I put my flashlight? ;(