You can drop EJ22 lower compression piston and any turbo EJ rod in as well...of course asking me I'll say to go with custom pistons, and a longer rod...or do like one customer I have right now and sleeve and stroke it
A reasonable, easy 600whp with a broad tq curve shouldn't be an issue at all! I would actually leave the CR a bit higher and run less boost. To help maintain a flatter tq curve, higher combustion/fuel efficiency and keep stress somewhat minimized on the engine.
Regardless, it will be easy to shatter those factory gears
I like the project and thanks for sharing!
If you have any questions, feel free to PM me.