Brian - I have been out of the scene per se, but thats the only place I know that still does anymore. I thought they had or were switching out to 91 soon?
But, I heard there is a place that sells Sunoco 260GT on a pump. It is 100 octane unleaded and contains 9% ethanol.
I can do some digging into and see if I can find out where if you want to go this route. Text me your phone #. I texted you a while back but never heard from you - assumed you have changed your #.