Hello, a dimension request to anyone who may have changed out their head pipes and have their original head pipe laying around the garage.

Can anyone give me an accurate I.D. dimension of the branch pipe where the crossover comes off the main header?

I'm looking for the ID of that short Branch pipe that sticks out off the main headpipe to the crossover. Thank you

 

 

Did you guys ever figure this out? How was the results? Looking to do the same for my m8

 

1.75"