A fusion plate comprising: a main body portion (200-a) having a forward face and a rearward face opposed to the forward face; a first extension side portion (200-b) having a forward face and a rearward face opposed to the forward face and extending away from a first side of the main body; and a first bore in the first extension side portion extending from the rearward face to the forward face, the bore comprising: a first opening (208-a) in the rearward face having a first diameter extending from a first side of the first opening closest to the main body portion to an opposing side of the first opening; a second opening (208-b) in the forward face having a second diameter extending from a first side of the second opening closest to the main body portion to an opposing side of the first opening; and a throat portion (208-c) located intermediate the first opening and the second opening and having a third diameter extending from a first side of the throat portion closest to the main body portion to an opposing side of the throat portion; wherein the third diameter is shorter than the first diameter and the second diameter, characterized in that the first bore includes a first side wall portion proximate the main body portion and a second side wall portion opposite the first side wall portion; the first side wall portion includes an angled portion (300-a) extending from the first opening to a first point (300-c) intermediate the first opening and the second opening and a vertical wall portion (300-b) extending from the first point to the second opening; and the second side wall portion includes a vertical portion (301-a) extending from the first opening to a second point (301-c) intermediate the first opening and the second opening and an angled portion (301-b) extending from the second point to the second opening. a main body portion (200-a) having a forward face and a rearward face opposed to the forward face; a first extension side portion (200-b) having a forward face and a rearward face opposed to the forward face and extending away from a first side of the main body; and a first bore in the first extension side portion extending from the rearward face to the forward face, the bore comprising: a first opening (208-a) in the rearward face having a first diameter extending from a first side of the first opening closest to the main body portion to an opposing side of the first opening; a second opening (208-b) in the forward face having a second diameter extending from a first side of the second opening closest to the main body portion to an opposing side of the first opening; and a throat portion (208-c) located intermediate the first opening and the second opening and having a third diameter extending from a first side of the throat portion closest to the main body portion to an opposing side of the throat portion; wherein the third diameter is shorter than the first diameter and the second diameter, characterized in that the first bore includes a first side wall portion proximate the main body portion and a second side wall portion opposite the first side wall portion; the first side wall portion includes an angled portion (300-a) extending from the first opening to a first point (300-c) intermediate the first opening and the second opening and a vertical wall portion (300-b) extending from the first point to the second opening; and the second side wall portion includes a vertical portion (301-a) extending from the first opening to a second point (301-c) intermediate the first opening and the second opening and an angled portion (301-b) extending from the second point to the second opening. a first opening (208-a) in the rearward face having a first diameter extending from a first side of the first opening closest to the main body portion to an opposing side of the first opening; a second opening (208-b) in the forward face having a second diameter extending from a first side of the second opening closest to the main body portion to an opposing side of the first opening; and a throat portion (208-c) located intermediate the first opening and the second opening and having a third diameter extending from a first side of the throat portion closest to the main body portion to an opposing side of the throat portion; wherein the third diameter is shorter than the first diameter and the second diameter, characterized in that the first bore includes a first side wall portion proximate the main body portion and a second side wall portion opposite the first side wall portion; the first side wall portion includes an angled portion (300-a) extending from the first opening to a first point (300-c) intermediate the first opening and the second opening and a vertical wall portion (300-b) extending from the first point to the second opening; and the second side wall portion includes a vertical portion (301-a) extending from the first opening to a second point (301-c) intermediate the first opening and the second opening and an angled portion (301-b) extending from the second point to the second opening.