Crower stage IV's are the "biggest" off the shelf you can get, .621" lift. On our trucks the cam/converter really isn't an issue due to the immense torque these motors make down low. Cams/springs will net you @40rwhp and comperable torque numbers when tuned correctly.
First off its a honor to get a reply from you heard alot about your L beautiful truck! Also so what your saying is i can use the stock torque converter with the biggest cam?