I found the model number on the oven and ordered the part from AppliancePartsPros. Since I have a knee problem and could not get on my knees, we asked a friend to help. Fast and easy, he unscrewed the one that didn't work, unplugged it, plugged the new one in and replaced the screws to hold it in the over. And, YAY....we now have a working lower element again!
Thank you!!!