Exhaust port size

I would like to know what is the exhaust port size of a stock bbm? Or what is the size they should be? :yawinkle:
I'm drawing a dxf (CAD picture) of exhaust flange (for laser cutting), but all I have is exhaust sealings for my measurements.
Help would be appreciated, and the dxf will be shared, if You guys want to cut these..
I could allso have these cutted for You, but sending them from finland to states could be expensive, i think...

O yeah, the size in my drawing right now.. width: 1.7913 inch, height: 1.30 inch
(w:45,5mm h:33mm)
Should I change it, or go there and let the laser burn? :glasses7: