So I own a 1997 Kawasaki XZI 1100, everyone knows theses ski's ride like a bitch, so to improve stability and porpoising I have lined up a few after market(used) parts to buy

Shredmaster ride plate.
Beach House sponsons.
Work intake grate.

So my question is.... do I really need all 3 of these? or is that over the top?

input required please!!