I went from 377hp with the stage 2.(different tuner) to 393hp with the stage 3. Both on same dyno. M6 car with hand ported 243 heads and ls6 intake and 12 bolt with 4.11. I have not yet been to the track with the new cam. But on the stage 2 I got a best of 12.3@116 and an 11.8 @120 with a 75 shot (though I found out later it was running lean on the juice.)

OP, did you ever get this sorted or tested at track?