Greetings!
86 Dodge Daytona Turbo Z, Turbo I Log Stock. I drive this car every once in awhile, as its for pleasure with antique plates. Lately, I notice at idle it smokes from the exhaust and smells like burning oil. My first thought is the seals in the turbo have failed. Tonight I drove it for about a half hour on the highway. By the time I got home, the smoke cleared up. I only saw visible smoke at traffic lights. How can I diagnose blown seals in the transmission versus say, bad rings, valves, etc? It runs fine and the turbo spools up. Its just smelly

If the turbo is bad, anyone have any good tips for changing the turbo without pulling the head or the entire engine? I'm thinking maybe this is possible with a log intake?
Thanks for any advice.
-Lee