I'm 4 hours north of you. $440 for a clutch pack (from Texas) and 20 x $80/hr labor .. Jinma 354 .. our local highly experienced and regarded mechanic. For your Kubota there is a stealership in Ukiah, but surely there is one much closer to you down in the Bay Area. Down your way, I'd check and see if there are any trade/technical schools teaching this stuff, like a diesel version of barber college .. save some money. Good Luck