[Farmall] obsolete parts

[John Hall]

I went to Mcmaster and searched spline bore couplings, they look like 
love-joy couplings with a spine instead of a key. Is that what you need? 
Maybe search the net for spline bore couplings, specifically places that 
deal with sprockets/chains--power transmission.
You could get that made, but probably won't find a job shop with a 
spline broach and EDM will get a bit pricey.

John Hall