These are the vehicles from Manchester in the United Kingdom. I highly recommend that you install bhorton's UK pack and uninstall DPMP Police liveries since the liveries will conflict with the livery on the 4X4. This pack contains skins for:
Gavril Roamer - identical to 1999 Ford Explorer
Hirochi Sunburst - identical to 2006 Subaru Impreza
Ibishu Covet - identical to 2004 Ford Fiesta
Gavril H Series - identical to 2005 Ford Transit
These ARE skins after all so make sure you get the compatible vehicle and go into vehicle config, look for paint design and then look for GMP. Click that, give your computer a minute to load the skin and... voila. The Gavril Roamer GMP was absolutely hard to do. It was the scripting for the skin since the skin took me 20 minutes to make and the scripts took me 4 entire days. That's what happens when you persevere on your work. Here are the images.