That's not good man! The one's I bought off 3si.org blew oil out the exhaust but not into the intake piping. There was alot of play though in them. They did however make decent boost (13 psi). And mine only blew smoke when you got into the throttle. At idle and under mild load they seemed fine.
See if you can find a local turbo guy and have him look at them for you. He will be able to tell you if they are good or bad fairly quickly.