There's more than one error in that ad, there's no such thing as a 1965 150F, but then that is a common misconception. It has a slant tail, so it's a 150F all right, but all 150F's are 1966 models.
The price is good though. 150HP, long range tanks, heavy duty nose gear, and STOL kit. Paint looks good, not much of value in the panel, but it's OK. $29,500, better than average deal.