Got 10 of them and trying to get 4 running.
Going to sell the parts from what left over.
Have 3 NI, 2 NH 56, 2 NH 55, 2 MF and 1 IH.
Re-building one of the NH 56 this week and taking the other one apart, so I will have the parts ready to sell.
I rebuilt one of the NI last year and next week I am going to take the other 2 and make one field ready.