How To Know If A Car From Craigslist Is Stolen? ?

Hi i was looking at a car on craigslist and it was 1200 for a 1987 trans am but the engine needed to be rewired except the transmission was still hooked up because he was going to do an engine swap. So I went to see him and looked at the car he said he bought it in 1994 and it’s been sitting in his storage unit for the last 10 years. So I walked around the car it wasn’t in bad shape but I was worried because it needed to be rewired. Also, the title was clean. He said that be wanted to buy a house so he needed the money. Now be texted me saying be just found new parts so the car went up 100 and it still needs a water pump. I asked him how many miles are on it and he said it didn’t matter. He also told me he had a 1986 camaro for sale for 1800 and it runs great it just needs be plugs. I’m going to test drive the camaro this weekend. and I thought to myself so he’s selling a trans am that doesn’t run and needs work to it but a perfect camaro for 500 more? I thought this can’t be right. I just want to know are these cars stolen? Because I don’t really trust this guy at all so if someone could help me that would be great. Thank you!