Vanilla Coke has been adopted.
If you look at the thread under this, I have a few guinea pigs available (Adoptable cavies in MN). Schnitzel and Fritzel might be available for adoption as single pigs, but I haven't decided on that yet. And sometimes trios work well for boars.
How old is your boar?
There are lots of guinea pigs at the shelters.
www.petfinder.org