The Buda 273s are cast in block cylinders, not wet sleeve. You may be able to do it with a 230 block. Also, Buda sleeves have the seal ring on the sleeve, ACs have the seals in the block. Don't let anyone tell you they're the same. Some parts are, but not all. Just finished rebuilding a 230, picture of a Buda sleeve and what the parts supplier said was the right one. Is it the same as your AC?