How do i dismantle the pump assembly for the 2012 Yamaha VXR? I have the outlet nozzle, steering nozzel off and all bolts out of the impeller housing. do I just start prying now to break the gasket seal or is there somethign to do with the shaft?

Do i need to replace all seals and bearings when doing so? I need to put a stainless impeller on it. Also any recomendations on what brand and pitch impeller to get would be nice. I am looking at the Skat Trak but don't know what pitch to get? i like the way the OEM prop pushed but it just didn't hold up to well when I hit the sandbar...twice.