Two speeds are getting hard to find for mid range trucks. Most of them use automatics. And spoke are very rare also. The rear rear of a tandem will work, but then you will need a 10 speed transmission. Single speed rear rear are every where and go for little more than scrap. In fact with today's scrap price, I an going to start hauling off.

https://photos.app.goo.gl/NfrhhzxXcq7amnSV6