High power car pack 8.1.0

-Added a 200BX with a twin turbo, 6-speed manual, sticky tires, and ABS race brakes.
-Reduced the stickiness of tires on Sunburst and SBR4 to make them handle more realistically.
-Fixed the issue where the default sounds would play over the custom sounds by overwriting the stock engines for the SBR4 and Sunburst.
--If you use @TelemaX® 's sound pack, the default sounds may still play over my custom sounds, since his sounds are in the "default" group which plays the sounds even if the engines are labelled under a unique soundGroup.