There are things you could look at to see if a car is classic. First, you could check the engine. It is usually replaced to a higher power for greater speed and faster pull on the road. You could also look into accessories used that seem very luxurious, with a custom coachwork even. The original power brakes, automatic or one-time lubrication systems, and power clutch were most likely upgraded in class cars.
Online, you can find car bumpers
to suit your needs. However, if you want to buy a new auto part, which is a mechanical one, then you have to consider the difference in wear between the adjoining ones. The older your vehicle is, the greater the difference. Therefore, in this case it is better to look for used pieces. If the car is just a few years old, then you can go for factory original parts.
Whatever auto part it is that you need to buy make sure that you seek out a reputable dealer and that the parts you are buying are going to come with a warranty. There are many fake auto parts sellers out in the world so choose carefully. Ideally, you can buy most of your car parts and accessories online for some really good prices. It's a lot easier to do some price comparisons this way as well.
Spurious body parts are notorious for not fitting 100% correctly and so many times you will hear stories about the slight modifications that have had to be made, to make the auto body part fit correctly. Be it new holes to be drilled, a few taps of the hammer or a slight cut with the angle grinder. The stories are out there by the thousands.
The auto parts store is a good place to start to get the items you need to do the job. They can offer helpful advice, if you have any questions about the maintenance jobs you plan on doing.
Automotive recyclers offer great deals on used car parts. There are more recyclers out there than you might think. And their prices are hard to beat. One reason is that insurance companies can save money themselves by dropping off wrecked vehicles at a recycling yard. There are many other incentives, though, to shop from these guys.
Auto repair books and manuals can be found in the parts stores, in the bookstores, and online. Amazon offers a good selection of Haynes and Chilton repair manuals. Those are sorted by year, make and model of each vehicle. You may even buy them used if you wish.