I forgot which way the bottom needs to mount up, Is there a front & back, or does it matter? It says "stage 2" on the bottom part, Is this still the D shape street ram? Its for a friend of mine is why i'm asking.

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU