I would guess 900-950whp. Doesn’t sound like it has a converter. Just good ol low end torque. I imagine yours will probably run a similar e/t with your latest mods. Your lesser low end torque works to your advantage as far as hooking up the first 60’. Sounded like this guy wasn’t wot in 1st gear maybe 50-60% throttle paddle shift a tad early and mat it in 2nd gear. Matter of fact I know he wasn’t wot in 1st gear as even my 800+whp fries 1st gear wot even on the et street r’s.