There is a protrusion that sticks out to hold the spring. I first chamfered the edges of the rectangle sticking out. Based on Angel's design of the foundation,  I negative extruded the original rectangular form sticking out. I calculated how much to take out by subtracting the protrusion at its thickest by the thickness of the main body. Then, I extruded again, this time making a form that would create the "ledge/hook" like shape. Finally I filleted the edges until it looked similar to the original part from the car.

For the holes for the screw, I used calipers to measure how wide each was and how far away from the edges they were. This allowed me to plot its center point based on the "corner" of the front. 

Originally, the larger hole was was too big and loose, so I was going to make the 3.0 mm one smaller to match the 2.5 mm one that fit well. But Mr. Budzichowski let us know he bought heat inserts and after seeing how it would be used we decided to implement them. Since the heat inserts have a diameter of 3.5 mm, I ended up increasing the 2.5 mm hole to b 3.0 mm.