I'll be the first to ask, why are you replying with a signature as a non-signature? It keeps changing too, so it's like you are typing it out each time.
I thought a S550 weighed somewhere in 3750 range the owner of the scales claims they accurate at 3980. Maybe the stage roush tvs kit adds that much. Seems a little off to me. My 13 premium with a roush only weighs 3698 on drag wheels and no spare.. I weighed mine at the track no idea how accurate it is