I updated the IER Oreca LMPC using an ext_config.ini file. There was very little I could do to this car due to it having multiple parts linked together. I did what I could to increase the visuals on it. I also corrected the location of the flames for the exhaust.
The file comes with the config extension as well as a data file. Only the exhaust was changed in the data. Backup your data file before installing this one.