This is how skins should be - realistic, simple and none of that fake Marlboro / Red Bull / Liveries from other cars plastered on to another car nonsense. Thank you for uploading and also for the PSD template! PS What is the name of the font you used for the race car numbers? Been trying to find something like that for ages.
I have no idea what the priority line is for... Almost all Kunos default cars have the priority lines in there for each set of skins starting at 1 and counting upwards (apart from some of the rushed recent content they released), so I figured it was worth doing it myself in case there was some mysterious and secret reason it should be there.
Duplicating the priority line value for two different cars causes no problems at all, so it can`t be that important, whatever it is.