[jame]

I have a 1989 js 440 and was wondering what would be the best brand ride plate intake grate and impeller would work best to get the most out of my ski and where would I get them

 

[OL JS Rider]

I would get a used west coast or a mariner ride plate off of ebay! As for a prop be careful there are differences between 440 and js550 and 550 sx. I dont know anything about the pitch i havent tried any other than stock yet. But as for the ride plate I have a mariner on a 550 it sticks well in the turns vs stock. Sorry i cant help much on the prop.