i am interested in getting a classic car of some sort i know it is going to be a gm but gto camaro chevelle or maybe even an impala i haven't decided but when i look at these cars what should i check for???

 

It depends on how big of a project you want to get into.
Some cars you can drive off the lot in cherry condition. For a premium. Others are works in progress. Others are 10 year restos... :o
As far as the body goes:

A big thing to look for is rust or bondo. Common areas are the fenders behind the tires, trunk, wheelwells, floorpan, doors and door sills. All of these things are capable of being repaired of course. Doors and fenders are easy enough to re-skin or replace. Floorpans can cause you some grief if there is extensive rust.

You can tell if a door or fender has been bondoed by thunking it with your knuckle. Good panels will sound hollow and bondo will just give a dull thud.

Chrome pieces may have corrosion and are not the cheapest things to replace if they are bad. Some can be polished up.

You can also tell how good a restored vehicle was restored by looking at the lines of the car. For instance, looking from the front corner down the side to the rear corner. If the paint/panels are wavey ... there may be a question as to the quality of workmanship.

Good bodywork is not cheap.

Interior is pretty obvious. Cracks and tears and discoloration.

Engine:
If it blows blue smoke out the back, that is bad. If there is a tapping noise, that could be bad. Check for worn/old belts too.

I'm writing a book here. Anyway, if you see a car you are interested in. Do some research on the specific car and the options that were available on it that year. There is a lot of info on the web and books about those old cars. So when you go to look at it, you will know whether the car is stock or has been modified and so on. Hopefully the seller is trustworthy. That helps. Bring a mechanic friend to look at it with you.

Good luck.