Seadoo Snap in fenders

[desdawg]

A buddy sold his Seadoos and had 4 snap in fenders that he no longer needed. He gave them to me, but I have a '04 and '05 GTX. When I try to order brackets for them, I think the oldest model shown as compatible is 2015? Anyone have them installed on an older model? Not sure if the edges or gunnel design changed on the newer models to prevent using the installation brackets?

 

[xspook2]

I have them on my 2012 GTI, but that's a totally different gunwale design.