Unfortunately, to go farther on your stuck engine, it may be time to pull the heads. Now you can easily use the N/A engine in your parts truck with the Factory Turbo set up on it. You won't have any issues unless you start cranking up the boost. Leave the head bolts in place and just run it. The only thing that you'll have different is the oil port on the back of the block that feeds the oil to the turbo. It will be 1/8" NPT instead of the 1/4" NPT that the factory engine uses. Most (if not all) of the aftermarket turbos are fed oil from a 1/8" port so you won't have oiling issues at all. Just get an adapter that's 1/8" male X 1/4" female and install it underneath the piece that screws directly into the block on the Factory Turbo engine.
Will the na engine do fine a stock boost levels....can you turn the fuel up at all? What about lifespan? Is the na engine going to have a shorter life under boost than the stock turbo engine? I'll need to research threads here about putting a turbo kit on an na engine...I know plenty of people have done it. Which pump and injectors to use etc.