So that is not a DI ski, it is a GTX RFI. Last two digits of the hull VIN are the year. 01 = 2001
It is on it's second SBT engine after the first one failed immediately so good luck with that.....
Do not use a crap chinese starter. Find a used OEM one and put new brushes in it.
New battery, do not boost or jump start ever!
Make sure you are only using API-TC rated synthetic oil.
I would change the in-tank fuel filters.
Plastic plates are the seat latch and you will see locating holes on the hull over the engine compartment.