1969 Camaro Z-28, looked like this, but without the shaker hood or the OEM wheels:
Bought it in 1974 for $1,800. Noticed the carpet would pull away from the floor easily and when pulled up, you could see where the roll cage was mounted... Not sure if I did it right, but when I checked the engine numbers, a 283 was indicated. Ran like a bat out of hell though. I raced a friend in a 1970 Z-28 with a 4-bolt main with 4.11 gears (I had 3.73s) and was slightly ahead of him through nearly a 1/4 mile. Sold it for $1,800, including a bearskin rug, a rifle, and a hydroplane hull. Geez.
Had a lot of cars that I liked at the time, but nothing I ever regretted selling, including a 1980 Saab Turbo, 1984 GTI, 1986.5 Supra, 1989 Mustang LX conv 5.0, 2002 Grand Cherokee Overland 4.7 HO, 2004 WRX, and a 2008 ZO6.
Had a lot more cars I regretted buying...