I would highly suggest not going to a wilder cam to deal with detonation. One of our left coast members either Mick or Frankeduster (iirc) way back had a nightmare going that route till he finally lowered the SCR & took care of it properly (unless a person wants to proportion in some av or race gas (good material/info on that here!). Here one gas stn has "Sunoco unleaded 100 octane, 110 leaded, 112 octane" quote/unquote their ad. In 55 gal drums I am assuming (never been there). At the airport We used to be able to drive out on the tarmac & get filled from the tanker but they stopped that