hey just reading this post and its interesting........ what are the increases a rb25 series II turbo will give on a rb20det @ same psi (kw@wheels) and also i was thinking of getting a 3" dump pipe as well...... the rest of my exaust is 3" (cept dump) so with the rb25 turbo and 3" dump what would my kw@wheels increase by on the same boost? also would driveability be increased?