Kubota B8200, then a Kubota L3130 HST, now a Kubota L3400 HST
I would respectfully disagree with the comment that the Kubota kits didn't work so well- I found and installed one maybe 6 or 7 years ago (I posted when I did it, but I'm too lazy to look it up) and it has worked just fine- there's nothing about it I would wish were different. That said, I am sure they aren't available, so good luck with something else!