Gran Turismo 6 Career Mod 5.4

Made new engine sounds. Check change log to see the cars with these changes.
Trivia: Get the Jaguar XJ220 (Road and Race Model) on the game to check it's new engine sound.

Featuring a new endurance event and some engine sound fixes.

Featuring New events and other fixes.
Check change log.

-Adjusted opponent boost on all races (Extra and original game events);
-Changed Red Bull X series cars engine sound for tha same one used on X2010 in GT5;
-Replaced Experimental prototype challenge Class 1 and 2 event tracks by other ones, more easy to drive.

Featuring some extra events tweaks.
Check change log for more information.

Featuring a new event: Concept car club (Got inspiration on GT4 Spec 2 mod race event, made by TheAdmiester).

Featuring new events:

Japan vs. USA Championship;
Anglo-Japanese Championship;
Anglo-American Championship;
RUF Cup.

Featuring a new event: The italian avant garde.

-Changed mod name to GT6 Carrer mod (Requested by pez2k, author of GT1 and GT2 Plus) for avoid name and author confusions.

Check the change log for more information.