I'm planning on building a pro touring 1970 Dodge Challenger, and I am intending my engine to be a built 440/512 stroker, putting out somewhere around 550-650 horsepower and foot pounds of torque. How would a properly built Tremec T56 stand up to this? Can I have the shifter in the traditional spot that the 4 speed shifter was in, or would I have to get the TKO 5 speed for that? How hard is it to install in the car, match up to the 440, and get it all running and functioning perfectly? How would it compare to an A518 auto swap performance- and fuel economy-wise? Whatever I do I'm not leaving the old 727 auto or 4 speed in there.