Carter rebuild

BBD, I've seen new ones for less than $100
I wouldn't trust one of those chinacarbs any farther than I could throw it....
And op, why are you asking about jets? Why are you thinking you need replacement?
It's already richer than an original '84 carb would be.
You could use the same jets and different metering rods for same effect, but you won't need them unless you're also modifying the rest of the engine underneath the carb.