1.4 carb

will a 1.4 carb with manafold fit on a 1.2 engine

yes but i think the ports are a different shape. might be better off with 1.3 carb and manifold.

Fit the 1.4 carb with a 1300 inlet.

Wish id have known that earlier lol, i got a 1400 carb n inlet on my 1200, runs like a bag of spanners low down in the revs lol, i been told both 1300 carb and inlet are the perfect fit and make a noticable difference!!!

Carb is same as 1400 item.
So you just need a 1300 inlet.