Im a new owner of a second-hand car, and it is not even the latest model, some interior accessories are outdated. Im here to get pointers and customizations on what to install and do you typically do it yourself or your dealership should? I just know the basics like dash cams, sensors, etc.
That is the biggest and heaviest year Impala ever produced (same size as the Cadillac Brougham). The factory put the car on a diet starting in 1975 as they knew they were going to be having issues with leaded gas going away along with the BBC and the SBC 400 developed to move this car and light pick-ups. In 1977 the Impala shrank to a mid sized car (the size and weight of a 1970 Chevelle).
You can become accustomed to it's size with driving it a bit in empty parking lots to see how well you can park the car between the lines. Like playing music or football it is all about practice, practice practice.
Here is a young lady with a similar request driving a '68 Camaro (a compact car with stuby short trunk). She agrees with you in going for an app for her phone.