If there's enuff material there, drill n tap for 8-32 set screws and start at .055 and go up or down as needed but w/out an afr gauge it's a guessing game and LOTS of trial an error..........Good talking to you and if you do what we discussed you should be pretty close then salt to taste........
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.....