my understanding is that the stock Starion ecu will work fine mapping out the fuel and spark without the turbo attached. Just plumb the air intake for N/A. When the need for speed dictates pulling the trigger on the turbo, you'll already have all the wiring harness done. Then you could add the exhaust side of the equation, plumb the oil lines and intercooler lines, and voila. Others who have installed the turbo setup please chime in.

83 mitsu flat bed 2.6l weber, 88 auto tranny, 2" body lift, 4.625 LSD, 235/85-16E mudders (33 x 9.50).