I would plump for the twin 34 ict’s from Eurocarb. They are reasonably priced & Eurocarb keep lots of parts in stock, jets etc. winner
We bought a Weber from Eurocarb for the mk2 Golf, great quality carb and cost us £325 including fitting kit. The carb was made in Spain.
If you have a single progressive, you've still got that horrible T-shaped manifold, which is half the problem. Twins all the way.
This is what I would be fitting as well. They are good carbs, and once jetted right they rarely give any problems. Progressive carbs are great on Ford pinto engines. Too much faff on a flat 4
When I bought mine it was £140 for a 34PICT-3 Chinese copy, £250 ish for the progressive and £500+ for duals. Now that progressive is not such good value.