I have a 2009 Lsx swap, makes 600 to the wheels sae. The transmission finally gave out after 6 years at that power level. I realistically see this car at 800 - 900hp when all is said and done. Who should I get to build this transmission, or what company makes a good aftermarket one? Does anyone know all of the choices? I keep seeing Tim King, and Circle D. I was hoping that RPM would make one, but apparently not. I also heard Spartan LSX could do it.