To this peds has more colors like in GTA VCS you will need PedFuncs https://www.mixmods.com.br/2018/11/PedFuncs.html
Modloder link if you don't have https://www.mixmods.com.br/2015/01/SA-Modloader.html

If you want replace peds just move folder VCS Bikers (mod/replace/VCS Bikers) to modloader or import bikers to gta3.img.

If you want to add this peds, without replacing go to mod/add custom peds and there is an instrucion how to do this.

