Bump, i am currently working on a GMC C4500 Ambulance and im using a model BL player to scale it to the correct size. I will hopefully release it and resize the rest of the vehicles and release them. Once the GMC C4500 is done and ready to be released, i will make an Add-Ons topic.
Below is something similar to what it will look like.
UPDATE: The model is in blender and is almost ready to be exported.
UPDATE 2: Some progress. This was from when i first tested it. This has since been fixed.