This is a 2V intake manifold used for 1966/67 289 engines.
You can check the engine block on the passengers side part of the motor in between the motor and the firewall they'll be a thing called a starter that looks like an electrical motor, unbolt that and there will be casting numbers on it, like this
As far as heads you can pull your valve covers. This is a decent site to help you find those codes.
http://www.aacncclub.com/FORD_HEAD_CASTING.html
Fords are pretty simple to decript
The first letter is the year
C- 60 somethin
D- 70 somethin
E- 80 somethin
then a number bein anywhere from 1-9 is next
then the other two letters are car years
Like these 351w heads
The casting codes are D1AE
1971 outta a 71 mustang for a 351 windsor, and are 2v.
I learned all this in horse trading car parts.. Hope it helps.
Edit: and if that's the right intake manifold, it's a 289 motor, which is a destroked 302w. (less cubic inches) smaller crank shorter rods etc.
289s were stroked up to 302s in 69.. for that i'm positive.
Everything for the most part except the lower end components on 289s and 302s are interchangeable. The distributor from a 289 will fit a 302 and vice versa. Although I do believe the cam gears are different but I'm not sure? And you can use heads for a 351 windsor but the head bolts on the 351 windsor are bigger. and 351 windsor blocks have a taller deck heigth and bigger main caps. Best way to learn car stuff is to get a summit catalog or a jegs catalog and ooh and ahh..
