Higher quality model as EA replacement plus a few minor fixes.

Stats:

512x texture for high quality texture mod on VEG patch

256x texture can be used instead by renaming CARGAR.TGA

3152 total combined polygons for compatibility with unpatched game:

• 1778 polygons for high quality model (LOD0)
• 992 polygons for medium quality model (LOD1)
• 402 polygons for low quality model (LOD2)
• 12 polygons for tiny model (collision) plus 48 for headlamps

Slighty revised gear efficiency to remove shift skipping