sorry but i dont think that its that cheap to stay na and make a decent amount of power. If you want to make power boost it, I just sold my integra gsr (na). I spent around $8k after all said and done. with NA there is no cheap way, If you are going to do just bolt-ons and a valve job, port and polish or somthing maybe but to build a strong motor that will beat on built on turbo eg's and what not expect to pay alot more than a cuple grand