for 500.00 , and it starts, jump on it!
get it running semi decent, and drive it like you stole it! this car does not have to be the big project car if you dont want to be, and if its rusty definitely not, but think of this,
this car will have everything converted already and can be used as a template for the next body, which you can get cheap since you dont really need a drivetrain. either way, you win, and cant lose! i say buy it.