ReadMe
1. Download SparkIV at http://www.gtagaming.com/downloads/gta-iv/tools/1824
2. Open it, and open componentpeds, located at grand theft auto 4/pc/models/componentpeds
3. Open ig_luis
4. Import uppr_spec_000, uppr_normal_000 and uppr_diff_000_a_uni.
5. Save and Rebuild.
6. Done! Enjoy!
Screenshots:
http://img691.imageshack.us/i/sparkiv2010012215353506.png/