With a bit of work I as able to convert the two door to a four door. It's not perfect or finished but here's where it's at:

You will need two kits to do this so that you can get the extra set of door handles and the proper sized lower cladding for the body sides

I also used built a hearse. I had to use two bodies:

The euro nose on the brougham was used from 1990-1992. They also added the lower body cladding at that time as well. We had one in my family. Dad decided he wanted one and drove one with the 5.0 and one with the 5.7 litre engines. The 5.7 was far superior. These are great cars that are really starting to rise in value.

Check out my Cadillac albums on Fotki to see some of the work done to build these.