It's for '65 Olds 442's , but there is still alot of facinating info for those of us that are into that sort of thing. Some of the info contained there gives some insight to those perplexing questions like 'what are those acc codes on my Fremont built '66???' Okay, I admit it....I'm a numbers geek! :bla: Take a look: http://www.442bro.com/