My experience of front drums is that they need constant cleaning and adjusting - like every weekend constant - if they're to work at all, I can't speak about them working well as that's something I never achieved. Discs work better and need a lot less maintenance so it's a no brainer for me - discs every time.
I would tend to agree with this. My experience perhaps not quite so negative, they certainly could be pretty effective when working properly but definately a much more reliable and consistent result from the discs without any need for regular fettling.
Two conversion routes available to the OP.
1. There was a factory option for discs (certainly for early 1200, not sure if ever offered for 94
which used the same vertical link with an adaptor piece for a caliper fitted instead of the drum backplate. To go this route you'd need
- The adapter plates (v. hard to find now)
- Calipers. Would originally have been type 12 but 14s could also be used and easier to find now
- Hubs & discs. Some variation between early (Type 12 caliper) and later (type 14 caliper) with the latter having a machined edge on the circumference to give clearance with the calipers
- Brake pipes - new flexi-hoses plus I'm pretty sure I had to modify the hard-line run slightly though it's years ago now......
2. Use the complete later vertical link assembly with hubs/discs calipers from any Herald or Spitfire. Same comments on brake lines will apply.