I have a 1969 mustang big block radiator I may sell but I dont know what it is worth. The number is C9ZE-AE1 date 9AA. I had the car since 1973 and I replace the radiator in 2013 with a aluminum one. Built date of the car is March 24 1969 is what Marti report says. It worked up until 2013. Its been sitting on the shelve since then and thinking about getting rid of it. You can go on Mustang 428 Corba Jet Registry and get all the information about it. It is a 4 speed radiator also. I believe it is also for the cougar. If you can help that would be great and thanks. If I sell it I am going to Beaver Spring could bring it along.