Originally Posted By hemi-itis
Think it's like 8 to 10 inches from the collector.


This is how I did mine..........8-10" past the MERGE not the flange where the exhaust bolts up to unless you have race headers then no flange of course........... 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.....