This is a Mod I have made for Nascar Heat. Just run the Exe file and it will install.
Baby Grand Test Skinpack Download
This installs one skin. To install your own skin, put the Tex file in C:\Program Files\Hasbro Interactive\NASCAR Heat\babygrands and make a drivers.txt entry.
Baby Grand Car file (included in install), Template (PSD), and 3ds File Download
If you wish to contact me with regards to Baby Grand Heat, give me a PM over the UkDirt Forum here. I'm working on adding semi-transparent windows to the car, as this now seems possible. If I manage it, I will release an update.