[Stick]

In '65 there were two different 289's put in the Mustang. One was a factory claimed 210 horse and the other was a dyno' proven 271 horse. Easiest way to spot the difference was to look under the hood and see if it has a two or four barrel carb. On the outside does your 'Stang have back-up lights. If it does it's a 65 but if it doesn't then it's a 64 1/2. Rust in the trunk and the floor board can be a problem but the normal place that you'ld find that rust is right above the frame rails and it should be repaired ASAP to avoid exhaust gas poisoning. Four Grand offer? Jump at it unless it's a 271 horse, '65 with matching numbers.