Big Thanks Mojo66 for the great mod. Maybe there would be no problems, if mod had implemented GTL-DVD-Check ( like some tracks from GTR2 for rFactor, or Historic GT mod for rFactor).
Nowadays, if we have this mod installed, there is a lot of "UNKNOWN" on the server list in game menu.
The problem appeared after releasing STCC2 & Retro by Simbin (cars from new addons have the same ID numbers like GTL-Mod cars and it makes a conflict).
Another new addon by Simbin - Formula Raceroom car, has the same ID number as many GTR2-mod cars.
Now to play stcc2 online, we must remove the gtl-mod, or change ID of several cars.
"Patch2" changes ID numbers of few cars, but is including all incar and car files. Only few of them were modified (in 1 line of each file).

Sorry for the interference into your great project, Mojo66. This is NOT an official 2nd patch by the Author. We hope there will be similar official gtl-patch2 by Mojo66, who knows better what ID numbers to choose for what car to avoid problems in future. – StuntmanJohn 21-Jul-2012  

extract the mod (folders: gamedata, uidata, customskins) to race07 folder: ...\steam\SteamApps\\race 07\
then check: you must have "GTL" folder in ...\race 07\gamedata\teams\
– StuntmanJohn 20-Jul-2012  

thanks – joe cronk 31-Oct-2011  

Where do I put file?
I know car mods, just drop em in race07 and extract since its WINrar, but Ive also tried maps and they are for GTR evolution (like this) and it doesnt work.. they say drop it in race07-gamedata-locations, BUT I DONT HAVE THIS FILE... PLEASE ANYONE GIVE ME AN GOOD ANSWER, A YOUTUBE VIDEO ANYTHING.. I CANT FIND ANYTHING, AND I DONT HAVE A GAMEDATA MAP IN RACE07 FOR STEAM?... – eBz95 24-May-2011  

2505 – Anonymous 03-May-2011  

nice
– thrylits 30-Mar-2011  

The download stop after a while. Have tryed several times.
The file is broken, or your server is stopping after a while!!!
Please fix this!
I do not have problem other places in time or sizes. – Stonehard 18-Nov-2010  

nice donne – manje 23-Sep-2010  

grande!!!!! – alelore56 23-May-2010  

yeah that's a great mod;the cars are so realistic and the game became more & more exciting :) – ozzy 06-May-2010  

TANCKS for this greith turismo mod,TANCKS – mario 04-Mar-2010  

good – ale 25-Jan-2010  

Great mod. Great to have all GTL cars in GTR EVO. – Joris 19-Jan-2010  

Looks good! I hope Silberpfeile will stand there – Yannick 29-Dec-2009  

nice – barkasss 09-Dec-2009  

5 stars – lpereira 08-Dec-2009