CCFL are glass tubes and as they are not designed fror the E34 they would be difficult to fit, i have fitted the 'standard' plastic led eyes as they have a degree of bend and can be fitted inside the glass if you remove it carefully with a heat gun.
The CCFL glass would break unless they were exact match for inside the glass and as fitting them is hard work, i doubt anyone would make them to be self fitted - they may say they would fit an E34 but my guess is they wont.
There is a pissibility you could bend them with heat but i wouldnt attempt it.
These are my normal eyes, self fitted