I wouldnt waste your money trying to get 160-170whp out of a ka. "IF" I were you, I would look into a sr20de that can be picked up from jhot for $500-600, then get a sr20ve head $400-$600. That head on a de block nets 11.0:1 cr, putting down roughly 190whp. Throw some N1 cams and a header, and sit well into the 200's. Though torque will only be about 160, its still the same amount as you'd net with the ka for the same price.