Can someone tell me what the difference is between the base turbo and the SE turbo that gives the SE 20hp more. Is it the ecu? The reason I ask is that I have found a salvage 99, 9-3 SE and would like to convert my Base model to an SE. I'm hoping the car is Trionic 7, if not can I convert to trionic 5? I'm pretty excited about this find, I plan on getting the Leather Seats, door pieces, lower body trim and rear body trim. The front is bashed in, so the bumper cover isn't an option.