The bigger concern is tuning. If you're going to make that much power, you'll need bigger injectors. Also, that much power under boost will require you to pull ignition timing dependent on boost level. All of that needs to be accounted for in the tuning. No off the shelf chip will be out there so that means a lot of time on the dyno. Tranny-wise, talk to Level10. As for oiling, you can probably tap off an existing oiling port (I'd assume there's an oil galley freeze plug on each side, but that's speculation). You can tap returns into the pan and use inline scavenge pumps to draw the oil back to the pan (which would be enough to draw oil through the turbos) and use a Walbro inline boost-a-pump for fueling.
It's doable but it's going to take a LOT of custom fabrication and a lot of swimming in uncharted waters.
ImTheDevil / 1999 30vqm