All depends on individual tastes and goals Rusty. I drove a lot of miles in my Challenger with a 340/non lock up 518 stock mopar hi stall converter/3.55 and loved the combo. I want to cruise 80 on the interstate and not go deaf. That combo would do it at about 2800 rpm. Not sure what I will go back with until I figure out the entire combo but 3.55 or 3.73 are likely.
