Possible to find PTO clutch for a 2004 SpeedZTR 42?

I've looked on line for a compatible clutch with no luck. Maybe the mower is too old? Can a newer clutch be retrofitted somehow?

Randy

Looking up parts for the old Dixon mowers can be kind of tricky. SpeedZtr is a name not a model number. the model number is on the metal tag riveted to the frame. Also with information from the engine can make up the true model number