Mod Cars Unavailable For Racing

[Kcool_Turbo]

So last night I stumbled back upon GTL. Loved it and imediately set about adding more cars and tracks. Most of the car mods seem to work fine but there are some that I can only view and drive when in the Car Dealer. If I then buy one of these cars and attempt to use it in a quick race, it doesn't show up on the list of available cars I can use.
Wondering if I'm just being stupid and missed something or if its something else entirely.

 

[jgf]

Some mod cars were adjusted for the classes their creator used, they may not work directly in your install. Check the "class" line in the .car file, there may be one listing or many, but if at least one of those does not match your classes (probably default since this is a new install) that car will not appear. Use an existing car that works, and you would like the not working car to appear with, and edit the new car file to use the same class(es).