What compression ratio is this engine going to have? If stock or close to stock, the 3071 gen 2 should be perfectly fine for 600whp, but might not completely spool up by 4000. The new G25-660 would also do 600whp with faster response and earlier spool, so definitely give that a look. The 3576 is too large for this engine, in my opinion, and unnecessary since this would be a track car and not a drag car.
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