I am in need of a transmission that can easily hold 600rwh. i am putting together a car with a 347 stroker motor and possibly a turbo in the near future. I am thinking about a tremec, but not sure which one to purchase. i hear many good things about the 3550 and the tko. Which one would be better. Don't care about hard shifting or anyting like that. Just want a better transmission that can hold more power. thank you.