I don't know who said modifying a pretege is twice as expensive, but I had an E36 BMW and I traded it for this car so I could afford to tune it. The Bimmer averaged $4k/year in maintenance, the MSP is...$900 w00t! The bimmer was way faster, but I could pass the bimmer w/ maybe $1k in mods on the MSP. Back t the main topic, turbo is the way to go. Best perfomance gains per dollar. But you have to remember to make sure your brakes and suspension can keep up with your speedy car. I was taught to always modify a car from the bottom up, starting with maintainance > brakes > suspension > then motor. I hope that's a helpful guideline to go by. GL man.