A few Dutch Caprices to identify

Hi,
 
(I posted this message on the CF General forum, but I cannot find a way to remove or delete it there. I'm sorry for that)
 
I am looking for people to help me identify a few Chevy's in my photo archive. Engine2 told me these are Caprices, so I replaced them to this forum.
 

I'm very sorry for the flag on the engine hood... Engine2 told me this is a model from the mid '80. Is this a 1986-1990 Caprice Coupe? It seems to have hidden headlights... Was that vinyl roof an extra option?
I know the ram-ornament on the hood from the K-30 pickups, so I am not sure if it is originally fitted. On the deck lid there was a blue lilly-emblem. What is modified or original on this car?

 

This seems to be a Caprice 6-door limousine from 1991 or 1992 as Engine2 told me. I would like to know which coachbuilder/firm built this kind of stretched limo.
 
Thanking you in advance,
 
Job (The Netherlands)

The yellow one is a Caprice coupe from 1977 - 1979.  The grille and header panel are definitely a caprice but it looks like an Impala tag on the sail panel.  The limo is an Impala from the same years.
The Caprices had more chrome on the headers than the Impalas. and the headlight and side marker lights were different.  Look at both pictures and you can see the difference in header panel styling.
You can tell the late 70s years because of the hard body creasejust below the window line.  The 80s models were the same shape but didn't have that crease.