Without knowing your book well, it's hard to make suggestions. But I can recommend some databases where you can do research.
Start with the list of publishers on QT. You should also check out fiction publishers listed on the Poets & Writer database:http://www.pw.org
And look at the publishers on Duotrope:http://www.duotrope.com
Don't forget to cross-check all listings at P&E to make sure they're legit. Good luck! Sounds interesting.