Alex at Discount Brake and Clutch in Martinez, builds some of the best Mopar big block engines around, if he has the time, be nice to him, very well known between the bay area and Sacramento. 925-370-2201
All I know is I spank my brother's 440 '70 Dart with my '67 383-S, he takes off faster early on but I usually pedal faster by the end of the 1/4 mile. I'd say whatever gets you on the road sooner, even if it's a small block.
:burnout: