i find this concept hard to get behind.
turbos should have a trickle of oil, that is not recoverved. not enough for smoke. which turbo did you get stuck w/? generally we just throw out the jap models. the German models don't leak. check compression!
we rebuilt Myst in Nov she purrs like the kitten she is most people don't go 325 kph. i think you have the b23f. a damn good engine. easily able to take the added compression of a turbo.
it all depends on the state of the rest of the car. if good think about dropping a new/used engine in. i hope i helped.