The XR3 carb and the early mk2 XR2, and mk1 XR2 all used the weber 32DFT, XR2 from 81-86 were 32DFT, all XR3 were 32DFT, later mk2 XR2 were 28/32TLDM, vacuum controlled secondary, where as the 32DFT was mechanical secondary.
It has to be said the early 1300cc XR2 used a smaller version of the 32DFT with venturis of 22mm and 22mm, and the 1600cc engines used the carb in 24mm and 25mm venturi sizes.
All in all a pretty good carb tbh is the 32DFT.
tabetha