Hey guys. The tranny in my r/t just puked so I figured if it is out what a good time to put in a shift kit and a higher stall. Its stock for now but hopefully soon it will get a 2 1/2 in. true dual catless exhaust, hedders, and an m1 single plane. I want to go up in stall because this winter I will start working on my twin turbo setup. It will either be twin turbo or it will get the 10.3 to 1 krc 408 kit. What stall do you think it needs and what converter company would you reccomend? What shift kit to? O yea, and it being stock now how much do you think 2200 stall or so would effect my gas mileage? Its already horrible and I really don't want to make it much worse. Thanks. I searched for other threads about converter but none were about turbos or 408 trucks.