You need to buy the HID lamp, the reflector housings are different to accept the different type of lighting element and the different reflector shape to provide the proper beam pattern. Plus the lights have an autolevelling feature, you need to get the HID lamp.
I second the advice to tape up the lamp, those HID bulbs are $150 each. Once it gets wet it'll be ruined.
$1700 isn't that bad for all that damage, could have been worse. I do see some warping of the bumper cover down by the foglight that may or may not be able to be smoothed out...