There are no numbers visible on the top tank, and forgive this old guy for not wanting to climb underneath. It does have a FoMoCo embossing.

 

Give me a few to go out and look at my original...

 

Mine is a auto, not manual. 1969 Mach1 Detroit built early April. With PS, AC.

 

It does have a FoMoCo embossing

OK, Here are some pic's I don't see numbers on it except the top of tank under where the upper bracket goes

Bottom of Tank

 

OK, Here are some pic's I don't see numbers on it except the top of tank under where the upper bracket goes

Bottom of Tank

I guess the numbers could be buried under paint but is it possible the sides straps are not correct ??
The Shroud Number was correct though C90E-8146F

 

I do not know enough about them to say if this is a "correct" one or not.

 

Has the engine been rebuilt? Cam? Intake? Bored? Any other mods to the engine?
Your car may have come stock with a 2-row radiator as mine did. If there have been any modifications to the engine, you may have to upgrade to a 3-row.
My 69 had a stock 2-row. I now have a 3-row, but there's still room for a wider radiator. My car runs hot on 90 degree days, 235 plus sometimes. There's room for a wider rad. One of these days, I'll get one.

 

PO said this radiator was re-cored, looks like 3 rows now, not sure what was standered I also sanded some paint off the sides where the numbers should be but so far I have not been able to find any trace of numbers. Other then the numbers being a bit of mystery it looks perfect for my 69 351w manual car.