Which Weber?

Im looking to do a Weber conversion on my 1985 1.6L Cabriolet currently containing a Pierburg 2E. As you probably know the carbs are renowned  for playing up and I've had constant problems since buying the car. I was looking for advice on which Weber carburettor its best I change too? 

We use weber dcd7 36 carb(in South Africa at altitude),you will just need to put an adaptor between carb and manifold. For economy you can use the following:We use weber 38 for racing

weber 36 dcd7 settings

stage 1(primary)          stage 2(secondary)

choke   25                      26

mains   120                    145

airs        205                    160 e/tube   F23                    F30

idle         50

pump      50 Timing 28 deg @ 4500 rpm   (using 95/98 gas)