in the west it's available in bulk, 20lt, 205lt, you need a logbook to buy it, it's 100 octane, and slower burning, so timing will need to be adjusted to accomodate..
ha ha, I'll keep my eye on the other one thats better than mine for you Neil, I reckon it's a few years away yet though, If i keep them up with good parts it should stay plum..