I guess building a car out of old parts isn’t the best idea. Although in the city I grew up in until I was 18, a lot of people did it, but mostly for themselves, not for resale or anything. I’m more for reinforcing the car, for example with an aftermarket bumper https://bumperstock.com/collections/2013-2018-dodge-ram-1500-front-bumpers. A great option for those who go off-road and want a much lower risk of damage.