I just installed a WR Long 3rd function kit on my LS. High quality components and hoses.
You can piece part the pieces together a bit cheaper, but you’ll spend a lot of time running to have hoses made, making your own mounting brackets and finding a joystick handle/switch combo.
Oliver Super55, John Deere 4310, John Deere 4400, Kubota L2500 (had)
I put a WR long Diverter on my 420 loader and one set of rear remote on my JD 4310. The diverter kit is for the grapple honestly is a better option for a grapple. It just is push button control and your hand never has to leave the loader joystick. WR long kit is great comes with all the hoses and is really a pretty easy installation.
The rear remote kit took me a long time to find. One finally popped up on Ebay and snagged it but installing it is a lot more labor intensive and if I want to run the grapple off it I have to run lines from the loader to the back of the machine and then remove my hand off the joystick to operate the remote valve handle.