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A stock engine with only BC264 (or JWT S3) cams makes that power, All stock sr20det will do it with the right tune (simply 11.8:1 air fuel, and 10-13* of timing btdc on most engines with 93 octane is fine) The OEM head is more than capable of supporting 400~ with just the camshaft upgrades, and S3 are the better choice since they allow you to keep the OEM valve springs, which is the best possible way to run a daily driver.
I would stay with 264 or less duration. Extra is not needed, will increase lag, hurt fuel economy, make it less fun to drive.
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