BLS The OG to install the mod:
*open img tool.
*open gta3 with imagetool, located in gta sa/models.
*go to FIND, located in edit.
*write the name of the file (contachou1_lae2.txd) and select locate.
* there must appear a name in blue. extract it(if you want) mt double clicking in that blue name, extract, and select the place you want to make backup of that file.
*and then select REPLACE(by doubleclicking too in the blue name), and select the file of this mode.
*close img tool.. you're done.
I hope this will help =P