I've seen pix and stories of Russian Lada engines and tractor engines, etc. powering some of those huge, heavy cars. Some also run on mixes of gasoline, kerosene, diesel, propane, even vegetable oil. Many replacement parts are home-brewed or cannibalized from other vehicles.
I'd steer clear of them. They won't be worth what collectors are thinking and hoping they are.
http://jalopnik.com/5926892/in-commu...70052/+pgeorge