this seriously isn't worth doing, I have a 1.4 (I drive at the moment) and an 8v gti (kind of project until insurance drops off a bit), I considered doing a swap too but pretty much every part of the car is different apart from the chassis, you would pretty much have to do a complete chassis swap. The brakes and suspension on the 1.4 is sh!t, and so is pretty much everything else about it I am afraid.
If you want a project car just do what I am doing and buy a GTI to begin with and tweak/restore that for a bit until your insurance is cheaper. They are so cheap at the moment, you could pick up a half decent one for as little as £300.