I have a stock 5.0 in a 66 mustang convertible. Want a more rough idle/lope but only want to change the cam. What is a nice sounding cam with a little performance boost good for a stock 5.0 HO? Running an AOD, has a mild performance stall, currently stalls just over 2000. 2.5 exhaust. Rear is 380's. Thanks for the help.