The opening in the manifold is 2" (3 bolt) and there's a 1/4" lip around it for the 'donut' gasket. Then a 2 1/2" pipe directs the exhaust to the muffler.

Some 292s had a 2 bolt one which is the same as a passenger car.

You'll love it. \:\)

John M., I.I. #3370

"There are no shortcuts to any place worth going". -Anon