The tractor junkyard near me has piles of B275s and B414s. They are pretty common. B275 and B414 are basically the same tractors with slightly different engines and options. Industrial 3414 can also be the same as yours, depending on how it was ordered.
The guy near me is McFaddens in Sharon Springs, NY.
There's one laying in the pile at my local scrap metal place right now. Complete except for the engine. I wish I could drag it home. Industrial 3414 - same trans as your 414. I did get to rob some parts of the hoe on the rear, though.