#41457, "RE: What is Max Performance from a 420A--Non Turbo" In response to In response to 11
I would recommend turbo and rebuilt motor for most cost effective power. Eric R from socal spent 8k to get about 200 hp at the wheels, which is not very cost effective. He did pretty much everything to his car, but it still didn't have nearly as much power as a stage 2 turbo. Since you're asking for cost effective, I would go turbo. Just keep in mind the risks of blowing the motor. I personally did not go turbo because of that, since I need a reliable daily driver.
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2004 WRX - WR Blue Pearl 1997 Eclipse GS - Royal Sapphire Pearl