its really not that hard... just need the right combo of parts... djv has a very mild 360 that is running 12.50's with a 3:23 gear...
from what i remember he has a stock bore 360, kb 107's stock small valve heads and a hemi grind cam... 280/474. has a nice converter with a 904 and a 3:23 8 1/4 rear.. yes he has a tunnle ram an eddy street ram but man that is a mild motor that in well into the 12's and its a full bodied car... maybe he will chime in ...