Always wanted to do this mod. Find not being able to see out the rear window a PITA.

I can sort out a 3 way rocker off/intermittant/constant switch and put it where the fog switch is and all the wiring issues.

What I'm not sure about is getting the rear window fitted. I know the UK/WRX bodywork is the same as theres a space on UK for the wiper motor. Its just getting the UK window removed and the WRX window fitted. Want it done properly because you can see some classics have condensation at the base of the rear window.

Some have also said that the glass will be a different colour - is this true?