Hello Wokka,
I am from Bangalore and also know few riders who went through EFI to carb conversion. I am not sure about their technique and don't even know if what they did was right or not but these were the following parts that were changed...
The following are things to need to change-
1. Stator and rotar
2. UCE 350 wiring harness
3. UCE 350 TCI Unit
4. UCE 350 Ignition coil
5. New fuel tank and an adapter to mount fuel pet cock.
Things you dont need on the bike
1. ECu
2. Fuel Pump
3. Stator and Rotar
4. Wiring harness
Also, if you are looking for CV carbs of 32mm and 33mm size then I can provide you part numbers.. They are pretty cheap here
But again.. Round Slides and Flat Slides are more yummy in my opinion
-Sanket