Right, this seems to be causing some confusion.
A standard H7 halogen bulb is 41mm which we know deffinately fits in the mk4 ibiza
measured as shown in this pic...
if people with HID conversions could state
kit make/supplier
bulb (H7/H7r)
Length of bulb (measured as shown in above pic)
diffuser problems?
then we can hopefully clear things up a bit and see what kit fits
A standard H7 halogen bulb is 41mm which we know deffinately fits in the mk4 ibiza
measured as shown in this pic...

if people with HID conversions could state
kit make/supplier
bulb (H7/H7r)
Length of bulb (measured as shown in above pic)
diffuser problems?
then we can hopefully clear things up a bit and see what kit fits