I'd like a "classic" accelerator as well. I just received my stock A1200 in the mail about a week ago and would already like to see a large speed improvement.
I am in agreement with not sending it out to be sure that it will work with an ACA accelerator. I actually saw the postman literally throw the A1200 up to my porch and was not only horrified, but proceeded to give a piece of my mind which, of course, was very welcome.

Now that I have my 1200, he's not going anywhere any time soon
Thanks
Bob