The part number is 1J0 807 217c, which is a match / should fit all mk4's
And i moved the intercooler back as far as i could, though i did leave the piping attached. So that might of affected it a bit. I think i'll remove everything this wednesday and try fitting it whilst the intercooler isn't attached at all.
Also yes, I have been installing it correctly, slide it on to the wings first then bolt on, but it wouldn't even slide on to them which has got me this confused