I have this 10-speed model (sorry, I'd forgotten earlier) that I used on a 9-speed bike. Same pull ratio, works great, it will work with SRAM's Shimano-compatible 8-speed shifter.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F401206866530