That setup with a 5000 stall converter is not going to be streetable..... A 5000 stall converter is going to build so much heat the life expectancey of the transmission can be measured in hours..... Got to remember, that computer software shows calculations on all things being perfect.... Very few engines let alone cars with all the variables in suspension, track conditions, driver error, etc will realize the numbers put up by the computer program..... At our summer car show here, we always book in the chassis dyno to run cars on. I've seen a lot of alleged big horse cars register wheel horsepower in the 300 to 350 range... Not a lot of street cars without blowers or NOS have put up numbers in the 500 range.... Real Dyno's don't lie, desktop dyno's IMO assume too much about the vehicle/engine performance....