JD=puffy. 
UR (metal core)= 
Puffy?...in what way? I don't really see anything puffy about the JD dash I've got and it has a metal core as well. The only thing that I see wrong with the JD dash is that it doesn't have as crisp an outline around the Challenger emblem as an original dash but I suspect that the other aftermarket dashes are the same way.
If you have a UR dash please post some pictures, so we can see what it looks like. I can take additional pictures of a JD dash for comparison. I'm sure we'd all be interested in finding out who really makes the best product.
