NASCAR Heat Essentials is a package of files allowing you to run NASCAR Heat MODs and add-on tracks, as well as Carsets. It's already patched up to version 1.80, and will bring you all the features of NASCAR Heat as of February 2005. You don't need to have neither demo nor full version of NASCAR Heat installed to play NHeat add-ons. This install will take care of everything.

Note: this will work ONLY for add-on MODs and tracks, you won't be able to play neither full original version of NASCAR Heat nor the demo with these files.