OMG OMG I'm having to resist buying one of these immediately!! http://cgi.ebay.co.uk/VW-red-i-rear-badge-TDI-mk4-gti-golf-polo-lupo-v6-JEDI_W0QQitemZ110235733765QQihZ001QQcategoryZ72211QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
looks like that's what this bloke has doneyou can see that the J and E aren't the same as the D and I
I must warn you I'm about as decisive as a 5 yr old in a sweet shop!!
I think the J and E are from Jeep??