Help needed for Whiskey our cat

Our gorgous siamese kitty, Whiskey has been diagnosed with FIV (feline immunodeficiency virus). This means that his immune system is at risk and he can get very ill and die if we don't have a catio (cat enclosure) made and erected for him. Whiskey loves to be outside so we don't want to take his freedom away from him and lock him up inside. Unfortunately he has to be in an enclosure to avoid him coming into contact with other cats & avoid the spread of his disease as well as to stop him from coming into contact with cats who are sick. Unfortunately due to all Whiskey's vet bills thus far, we do not have the funds to erect a catio for him. So we are asking for you to open your hearts to this cause to help us give Whiskey the best quality of life for as long as possible.