Olduser 1—The “business” end is the same, the draper looks a better bet as the body will slide easier between the card and the door frame.
Other than my input earlier in the month under “rear parking sensors” the only thing I can add is to advise you to fit the buzzer under the bulb access panel on the nearside ,there is a handy screw for attachment. I assume you have downloaded the d.i.y.instructions from Parking-E website. Best of luck.