| Talonhawke |
Prerequisite: Str 13, Int 3; naga, serpentfolk, or creature that has the constrict special attack as a racial ability; base attack bonus +3.
Benefit: You gain the constrict and grab special attacks. Your constrict attack deals damage equal to your unarmed strike or primary natural weapon melee attack. Further, you can grab and constrict opponents up to your size.
Normal: You can grab and constrict creatures one size smaller than you
Based on that I don't see how it couldn't apply anything that the attack the damage is based off of would deal including enhancements or feats.
| Volkard Abendroth |
Final Embrace deals any and all damage that would be dealt by the natural weapon.
Nothing in the ability states damage is calculated differently than any other attack.
Don't forget you add your natural attacks enhancement bonuses to your your CMB, along with with Weapon Focus and any other to-hit modifiers.