get a swap, the dyno sheets don't lie...you will get more out of a stock dohc than you will out of a turbo or N/A single cam...sohc is a good beginner motor if you just want to toy with a few different setups for very little cash...but you will always get more out of a dohc. They have more tuneability...period end of story...and make more power across the board...once you have worked on and built these motors for a few years you will understand. You CAN get a sohc to 200hp, but you will spend half that getting a dohc to make the same power with more to spare...