The 1200 I mentioned is a bored main body but I add skirted banjos to help w/velocity and on my Dart it's worth 2+ mph so far and torque down low and in the mid where it's needed.......... thumbs

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....