That isn't software, that's data.

There are many alternator rebuild resources out there but the older
auto factory manuals had excellent details on this. There are also
several books out there. However unless you have a hydraulic press and
a lathe usually you can't rebuild alternators for what local shops
can. At least not the older ones.

I got a GM alternator for my diesel Benz-the previous owner modified
the bracket to take a Delco-for $23.00 with a Lifetime Guarantee at a
chain parts joint. That's tough to beat.Mopars and Fomocos were a
couple of bucks more. You have to be hardcore cheap to want to ****
with them for that.