2005 RXP piston question

[Jdublu]

Bought a 2005 rxp with engine issues. Tore it down and it's just the one piston. I do have some experience with Pwc engines, however this is my first Seadoo and my first 4 stroke repair. Can somebody please tell me what the stock size/brand of piston is for this particular Pwc? What I am seeing is that it is a Mahle 100p54 (99.94 on top).Can I order a replacement from sbt? The others are in great shape, although I plan to replace the rings anyway. My new head is in and I am really itching to put it back together.

Thanks in advance!

 

[Jdublu]

Also, as far as the supercharger is concerned, it appears to be functioning just fine, however is there a way to tell (besides tearing it down) if it has the metal washers instead or the cursed ceramic ones? The front of the housing has the part number and 2014, the back has part number and 2015.