[s-cars] UrS hood shapes related to "Bonnet" Swaps

[David Forgie]

The shape of the UrS4 and UrS6 front grills and hence grill surrounds on the hoods/bonnets is 
signifcantly different:

UrS4 - squarer, slightly trapezoidal grill:

http://12v.org/urs/ECS4adMay93.jpg

UrS6 - more trapezoidal, not square at all.
 
http://12v.org/urs/NogaroBlueUrS6Avant.jpg

Dave F.