Why is everybody so afraid of a tunnelram? If the op already has it I say try it.i had a 440 I threw togeather at the time because I didn't have the money for the good parts.i used a mopar m1 tunnelram and a pair of out of the box edelbrocks 750 carbs.all I did was pull them out of the box put them on and set the idle.the car was a 3600 pound 65 Plymouth belvedere II. That car would run 11.70 all day long and I drove it on the street every wear.i couldn't be leave how street able the tunnelram was compared to my edelbrock torque 440 and holley 750 DP.