After tracing an oil leak I've decided the turbo is the culprit. After removing the intake hose between the air box and turbo I struck oil! the intake side is apparently leaking oil. I can only guess the seal is bad after 400,000 miles (Jeeze you'd think they could make them more durable, its ONLY half a million miles!)
I'm considering rebuilding the turbo myself and after some research I've seen mixed opinions. Is this a DIY job? What special tools do I need? Will it need to be balanced afterward? Any guesses at cost? Whats the meaning of life? Any info is greatly appreciated.

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Serenity-86' 300SDL 482,000 miles (on a "14" head!)