Installation:
 
1. Using your IMGTool, open your gta3.img 
2. Find contachou1_lae2.txd in your gta3.img
3. Replace the old contachou1_lae2.txd with my contachou1_lae2.txd 
4. Rebuild the archive. 
5. In game, go to your save house on grove street and check out your new garage door!

Have Fun!

~ Hapsob