Well the difference between them would be that ones an actual colour concept (1 of a few hundred) and ones a replica (standard gti with a mishmash of cc bits) (1 of tens of thousands i guess)...
engines were the same i think... although only the 8v in uk.
Think they had white dials,
Theink they should have colour soncept on the side mouldings not gti,
Think they have colour concept inscribed into leather
If its a 16v, your speedo dials should go upto 160 mph not 140mph, and the revs to 6,900 not 6000 ish.
Think they had the 15" BBS solitudes from a vr6 highline...
Not sure what else