Engine I.D.

[62 Comet]

Started working on my motor, im pretty sure its a 200, its got 5 freeze plugs, its got a orange valve cover, and must have been off the road for a long time, b/c it has a Texaco oil filter on it, never heard of it but sounds old to me. Was wondering if i can get any info from the code right behind the manifold? If so here it is:

C5DE
6015-H

Let me know what your ideas are, or if anyone get any info from this, also i was told it was out of a mustang.

Thanks, Lee

 

[62 Comet]

Well i found the tag on the motor, hidden in grease, heres what it says:

200 65 3
5-F 42-J

All i can get from it is its a 200, 1965, and maybe the 3 means march??
Also when i got it i was told it was out of a mustang maybe thats what the rest of the #'s are?
Any extra info would be sweet, making progress on the seized piston, the cylinder with the open intake valve was full of water and had weird looking things growing on the walls, crunchy tube shaped things, its been a couple days soaking in diesel and now a couple days soaking in "Seafoam Deep Creep", and today im getting some movement.

Thanks, Lee