you must not be worried about your trans at all
also any reason your whole engine shakes once you hit the end of the pull? Almost makes me think you have some broken mounts or something. I mean I know that's a good amount of power but I don't think I've seen an engine move so violently after a pull as in the video.
When you get a chance can you post a log for VD/airboy running purposes. This thing must be insane to drive and really streetable with 20psi of boosting coming on by 3700rpm. I'm really surprised you aren't worried about the trans going though. Also which clutch are you using?