I want a hydraulic setup for 124 badly!!!
But, they sell for $300+, and that's usually doesn't come with everything.
I've seen complete set ups for over $500!!!!
Yes, I'm sure they pop up here and there for a reasonable price, but when you're looking....it doesn't work that way.
And I read all the time about buying cubs with a working setup, but then you're paying for another tractor, and if it's not close...there's shipping to add.
There out there, finding an affordable one when in a bind, is another story.
Try
www.duffnorton.com
They have some inexpensive actuators, tht should almost be a swap with original. Then you can have the original rebuilt.
Or, the right way is try the sponsors sites. Someone should have one.