What is the correct impeller and impeller housing?

[libforlife]

I have a 1993 Four Winns Liberator with a 454 OMC King Cobra. I am not sure what impeller and impeller housing to purchase. I can't find the exact one to fit my motor. Anybody know a good site to tell me a part number or does anybody know what the correct impeller and impeller housing I am looking for?

Any advice would be greatly appreciated.