I like my boat trailer lights so much that I put on my '05 900 that I swapped my new 2011's oem tail lights out with them before I sold the '05. I like the clear bottoms because they illuminate the area back there. I got mine at wally world for 20 something dollars a pair. I did have to improvise and drill a hole or two in the oem bracket and the wire plugs I adapted as well. Have a thread -will try to find it. Also they now have the led lights many are using . collie
It's pretty hard to find OEM outside dealers like your local folks, Messicks, Colemans and the like.
If the issue is cost, the ones on my 2004 were pretty crispy so I just went with rectangular boat trailer tail lights. Wired up just like the Kubota lights.
Something like these, you can find them at Walmart or most any place. Available in LED too.