NHC 250 exhaust flange dimensions

[hethead]

This is a big ask, but does anybody have the dimensions of the exhaust manifold where the muffler bolts on? The dimensions between bolt hole centerlines, the diameter of the exhaust outlet, the overall dimensions of the flange…?
It would save me about a 5 hour round trip drive if anybody does.

 

[US6x4]

I measure 4 1/8" square

 

[hethead]

I measure 4 1/8" square

View attachment 870111

Thank you! You just saved me 5 hours of driving to get to the truck and now I can start fabricating. I really appreciate that.

 

[US6x4]

Thank you! You just saved me 5 hours of driving to get to the truck and now I can start fabricating. I really appreciate that.

You're welcome! Lucky timing- it's not everyday I have an extra manifold sitting in the lawn mower shed...