Weld the knotter frame...
The baler wasn't made by NewHolland. It wasn't made by Ford either. There's conflicting information, depending on who you ask as to wether it was made by Long or NewIdea... That said... there isn't anything that NewIdea has that's a direct cross.
The knotter is the same type and style as the (I think) Deering knotter that NH used at the time... and some parts will actually interchange... but I do not believe the knotter frame to be among them. So... if it is still available through CNH, you can buy one for the 1300 or whatever price they list on it.... or weld this one... or park it in the weeds.