PS: All the sounds: gravel, wind, collision, gear-change can be listened to in the latest video I made . The engine sound has already been replaced before.
Hello all,I created a sound replacement pack for the wind, gravel, collision and gear sounds using own and public domain sounds from freesound.org. I prepared a .7 file  and a .ogg Vorbis preview  of the sounds in-action. http://qubodup.net/f/trigger/sounds.7z (1.3M)Please review and let me know what you think! If there are no objections, I will commit these sounds in a week to SVN.