Caledonia Stock - Rockstar Kush Brantford Stock - Master Kush Ultra Pickering Stock - Rockstar Kush Introducing Old School Fuel by West Coast Gas. Born from the heart of British Columbia, this rotating selection of legendary strains is crafted from classic OG lineage including BC Rockstar, MK Ultra, Pink Kush and D. Bubba with a potent smoke that embodies the essence of gassy genetics. Just like it sounds, Old School Fuel by West Coast Gas.