Thinking about getting a yaris

[sv650steve]

I really like the yaris. They are pretty nice and well within my price range. I currently have a 2000 v6 accord auto, but the slushbox transmission is probably going to go out soon. The yaris is the exact opposite of the accord it's light, nimble, and gets good gas mileage. My only drawback is the power. I was thinking I'd do some minor modifications and get a little bit more power out of it without investing huge amounts of money. I was thinking of doing a light weight flywheel, pulleys, header, then maybe intake. I don't want to go all the way for a turbo, or have to do tuning. I've heard of guys making an extra 15hp with their manual yaris. Can this be done without tuning and just bolt ons? I'm looking for something thats closer in power to my accord, granted it probably only makes 180hp at the wheels and 3300 pounds. Or would I be better off picking a different car.