So my t-45 is beginning to grind when i rip gears, so i want to replace it. I am eventually goin to push 600hp, long term, but 400 by next spring and i want a good strong trans. My question is, is there a rebuild kit to strengthen my T-45 like a promotion rebuild kit? and would a TKO500 or TKO600 be an easy swap? would i need any extra parts like new speed sensors?