It is unlikely you'll find a restorable large bore cutout, so we made some exact iron replicas, which are correct down the the foundry number and patent date (pat. June 24, 1913) A full deflector type which diverts all the exhaust out of the opening, it has machined inlet and outlet openings so you can bore it to your own specifications. It accommodates pipes       1-1/2"-2-1/2"