You can attach the steppers to the axis in really easy ways. You can find photos in the forum of people that has attached their steppers to the machine it with 4 bolts for clearance, an Alu plate, two inches of reinforced hose and two clamps, and they say it's working with no problem and good results. And the aestethics aren't so bad
For example, take a look at the photo. Do not know (I can't see it) if the owner used reinforced hose, but the bolt&plate mounting is easy and effective.
Hope it helps