Leaded fuel as fairly easy to get, here in san diego. quite a few 76 stations sell it... infact, you can call a service number, and 76 will send a truck out to deliver 25 gallons, or more. it's alot easier to get your hands on then you think. 125 octane low lead, is what we run in our cessna 210. i can't tell you how many times i've mixxed it into my 91 octane unleaded.