Easy Install:
Copy the tofu_shop folder into the modloader folder.

Manual install:
Copy the data folder into your game root folder - install the gta3.img files - add these lines to your gta_vc.dat:

IDE DATA\MAPS\tofu_shop\tofu_shop.IDE

COLFILE 0 DATA\MAPS\tofu_shop\tofu_shop.COL

IPL DATA\MAPS\tofu_shop\tofu_shop.IPL