On my 8320 I was able to manually sync contacts with FB friends when their names in my phone didnt match their FB profiles. I can't seem to find how to do that on my Torch.
Go on the facebook apps, select Friends (or F) and then scroll to the contact you want to sync, then click on it (or press the menu button), it will show you a menu with the option Connect to Blackberry... (or Connect to Blackberry Contact) click on it, and then click Select Contact, and select your contact.