There is really no downside to this idea. The thing is which badge is best to go for?
1.0 from Lupo
1.4 from Polo
Or 1.6 from Golf
I think the lowest badge on the mk4 was the 1.6, 1.4 badge is from a polo but most won't be aware of that, so a 1.0 badge would be alright as well, only the mk4 never came out with a 1.0 engine, again I'm not sure whether most non golf owners are aware of that