I agree, plus this setup will have higher compression (10:1 vs. 8.5:1).
But on that same note, from what I've gathered is while the 2JZ may be strong, it isn't nearly as efficient of a design as Mitsu motors. So while it does have more displacement, that doesn't directly correlate to 1L of additional power over a 4G63.
And in the end it's all I personally can compare it to as I've never been around 2JZ setups before. So what's a cracka to do...