I'm embarking on the journey of getting a new project car (also daily because I can only afford one car). I'm looking into an 83 240ZX. It's got 70,422 miles and the owners asking $4200. Red exterior black interior digital dash and five-speed. Minor paint chips around the door frame but otherwise good exterior. Interior looks good in the pictures. What are some things I should know before test driving or buying a 240zx?