NH 451 Wobble Box Assembly & Cutter Bar to a 450?

[Baseball Fan]

Greetings everyone! I currently have a NH 451 mower that is in great working order as I just went through the entire cutter bar last year. A neighbor not far from the family farm has a 450 that was once owned by Grandpa, who has since passed away. The 450 is not currently working (it sounds like the drive head that connects the knife is broken.) Would a 451 wobble box and cutter bar assembly swap be able to transfer to a 450? Thanks in advance!

 

[wh]

I have a 450 and I “think” when I repaired the box I had to buy 451 parts. Think I had to buy the flywheel pulley also.