Very good question! If you are not concerned about fuel economy, I personally like the 3.1L Vmax OX66. You can easily turn a 200 into a 300hp with one of our Phase kits.

If you are concerned with fuel economy, I would start with a 225 or 250 HPDI Vmax and achive the same results as the 3.1L but it will require a little more money.