hall sensor wanted for mk1 cabriolet 1.8 8v

hall sensor needed asap for mk1 golf cabriolet 1.8 8v carb EX engine code i believe , brand new would be better but just as log as its working! cheers

I'm changing my engine to a Dx engine so I have a 1.8 carb engine. But I'm not sure what a hall sensor is.
my engine was running sweet so it should be all good if you can tell me where to find it

Hall sender is the electrical workings in the distributor, probably easier to get the whole thing than risk trying to take one out without damage