More info on.the motor combo?? What block are you using?
Why does the tq and hp not cross at 5250? Sorry to be that guy, but those #'s are pretty high for Performer heads and 5psi (assuming you have a .4 spring). I don't know how spinning on the dyno could effect #'s if it did. But if you're using a .4 spring, I guesstimate you're making ~520 lb-ft before boost.
Don't mean to rain on your parade, and I could be missing something just going by what's in your sig. Anyway, sweet turbo coupe