Ultimate A-500

I also found myself an A500 recently and am in the same boat as the OP.
A500 Overdrive transmission

I will also install a TransGO TFOD-HD2 kit, but also want to do a total rebuild as I was told 2nd gear is gone in my transmission.
I'm still struggling a bit with what exactly comes with the rebuild-kits. Looking mainly at the kits and parts at TransmissionCenter, but it's not really clear what will get delivered.