I'm not an expert, but they could belong to any model of the Giulia 105 series. Below are two pages from the series 1 GT Junior.
The number on the rubber caps is pretty much useless, as it seems to be an Ehrenreich number (the company that had the patents on the track rod ends), not an Alfa number.
For more or better info, the thread should probably be moved from the gearbox sub-forum to the suspension sub-forum.
[SIZE="1"]'63 2600 Touring Spider (AR 191437, the car that started the 2000/2600 International Register, reassembly in progress)
ex-'65 2600 SZ (AR 856043, the car in my avatar, sold as resto project to Austria)
Maintainer of a private 2600 SZ register (not the one in the Netherlands).[/SIZE]