I think a 1.7 will fit as the later 1.4 rad is the same size (unlike the early 1.4 which has a smaller radiator) BUT wait till a few others have posted cos I've not looked at a later 1.4 car really, mines an old type 1.4 and my others are 1.7 and 2.0. Check if all the hoses are in the same place.
There are thick ones and thin ones, they both fit but the rubber mounts might need changing or altering. I've recently put a thicker rad into my 1.7, I had to cut quite a bit of rubber off the mounts though. The fine aluminium fins rot away faster on the thin ones than the copper fins on the thick one.
P.S. ignore that first post, went wrong I don't know how to delete it
