I read and your list and idk if I read wrong but you only have exhaust and an intake I believe and you made that much , nice.
Mine made 444 rwhp with boss manifold, jlt intake, and off road x pipe on the BBR dyno. Peak power came in at about 6500 rpm also it just held it all the way to redline. I thought it was kinda high so I dynoed it at another shop and it made 438.